Pepe,

 Try something like this.  I simplified populating the object to use static values, but this works for me:

Integer li_loop
wsagroxagreements lpx_agreements[], lpx_agreements_null[]

FOR li_loop = 1 TO 5
   lpx_agreements[li_loop] = CREATE wsagroxagreements
   lpx_agreements[li_loop].agree = "Value1"
   lpx_agreements[li_loop].breeder = "Value2"
   lpx_agreements[li_loop].buds = "Value3"
   lpx_agreements[li_loop].cempr = "Value4"
NEXT

FOR li_loop = 1 TO 5
   IF IsValid(lpx_agreements[li_loop]) THEN
      DESTROY lpx_agreements[li_loop]
   END IF
NEXT

lpx_agreements = lpx_agreements_null

return 1

Good luck I think you are close, hopefully this gets you over the hump,

Kevin

Hi again guys, I'm back here, I bacame a dad last month and it's been quite difficult continuing work. 

I've created an structure with the same fields as wsagroxagreements structure, and it works. 

The problem is that the function loadtableagreements needs a wagroxagreements datatype. 

I paste my actual code here. Thank you again everyone.

decimal lc_filas_royal, i , contador
string resultado_contrato, resultado_valor, resultado_royal
long ll_filas_contratos, ll_constructor

SoapConnection conn // Definimos conexión SOAP
webserviceagroxsnflcontrollerservice proxy_obj // Declaramos proxy
long rVal

conn = create SoapConnection //Creamos instancia de la conexión

rVal = Conn.CreateInstance(proxy_obj, &
"webserviceagroxsnflcontrollerservice")

//DECLARACION DE LA DW Y DE LAS VARIABLES DE CONTRATOS

ids_agreements = create u_ds
ids_agreements.DataObject = "d_snfl_listado_var"
ids_agreements.SetTransObject(sqlca)

ids_agreements.Retrieve( )

string ls_cempr_agree, ls_dempr_agree, ls_agree_agree, ls_ctn_agree, ls_datesig_agree, ls_cpropie_agree, ls_dpropie_agree,ls_cpais_agree, ls_linea_agree, ls_dpais_agree
string ls_cvaried_agree, ls_pbr_agree, ls_working_agree, ls_breeder_agree, ls_buds_agree, ls_plants_agree, ls_hectareas_agree, ls_year_plant_agree, ls_codmov_agree, ls_year_usa_agree, ls_year_act_agree, ls_movingday_agree
wsagroxagreements ls_cuerpo_contratos[]

str_contratos le_estructura_agree[]

ll_filas_contratos = ids_agreements.Rowcount( )

for i = 1 to ll_filas_contratos

ls_cempr_agree= trim(ids_agreements.Object.snflemplic_cempr[i])
ls_dempr_agree = trim(ids_agreements.Object.snflemplic_dempr[i])
ls_agree_agree = trim(ids_agreements.Object.snflagreement_agree[i])
ls_ctn_agree = trim(ids_agreements.Object.snflagreement_ctn[i])
ls_datesig_agree = trim(string(ids_agreements.Object.snflagreement_datesig[i]))
ls_cpropie_agree = trim(string(ids_agreements.Object.snflagreement_cpropie[i]))
ls_dpropie_agree = trim(ids_agreements.Object.snflgrower_dpropie[i])
ls_cpais_agree = trim(string(ids_agreements.Object.snflgrower_cpais[i]))
ls_dpais_agree = trim(string(ids_agreements.Object.gpaises_dpais[i]))
ls_linea_agree = trim(string(ids_agreements.Object.snfldata_linea[i]))
ls_cvaried_agree = trim(string (ids_agreements.Object.snfldata_cvaried[i]))
ls_pbr_agree = trim(string(ids_agreements.Object.snflvariety_breeder[i])) //ES POSIBLE QUE EN LA DW, ELS CAMPS PBR I BREEDER ESTIGUEN CAMBIATS??????
ls_working_agree = trim(string(ids_agreements.Object.snflvariety_working[i]))
ls_breeder_agree = trim(string(ids_agreements.Object.snflvariety_pbr[i])) //ES POSIBLE QUE EN LA DW, ELS CAMPS PBR I BREEDER ESTIGUEN CAMBIATS??????
ls_buds_agree = trim(string(ids_agreements.Object.snfldata_buds[i]))
ls_plants_agree = trim(string(ids_agreements.Object.snfldata_plants[i]))
ls_hectareas_agree = trim(string(ids_agreements.Object.snfldata_hectareas[i]))
ls_year_plant_agree = trim(string(ids_agreements.Object.snfldata_year_plant[i]))
ls_codmov_agree = trim(string(ids_agreements.Object.snfldata_codmov[i]))
ls_year_usa_agree =trim(string(ids_agreements.Object.snfldata_year_usa[i]))
ls_year_act_agree =trim(string(ids_agreements.Object.snfldata_year_act[i]))
ls_movingday_agree =trim(string(ids_agreements.Object.snfldata_moving_day[i]))

le_estructura_agree[i].cempr = ls_cempr_agree
le_estructura_agree[i].dempr = ls_dempr_agree
le_estructura_agree[i].agree = ls_agree_agree
le_estructura_agree[i].ctn = ls_ctn_agree
le_estructura_agree[i].datesig = ls_datesig_agree
le_estructura_agree[i].cpropie = ls_cpropie_agree
le_estructura_agree[i].dpropie = ls_dpropie_agree
le_estructura_agree[i].cpais = ls_cpais_agree
le_estructura_agree[i].dpais = ls_dpais_agree
le_estructura_agree[i].linea = ls_linea_agree
le_estructura_agree[i].cvaried = ls_cvaried_agree
le_estructura_agree[i].pbr = ls_pbr_agree
le_estructura_agree[i].working = ls_working_agree
le_estructura_agree[i].breeder = ls_breeder_agree
le_estructura_agree[i].buds = ls_buds_agree
le_estructura_agree[i].plants = ls_plants_agree
le_estructura_agree[i].hectareas = ls_hectareas_agree
le_estructura_agree[i].year_plant = ls_year_plant_agree
le_estructura_agree[i].codmov = ls_codmov_agree
le_estructura_agree[i].year_usa = ls_year_usa_agree
le_estructura_agree[i].year_act= ls_year_act_agree
le_estructura_agree[i].movingday = ls_movingday_agree

// ls_cuerpo_contratos[i].cempr = ls_cempr_agree
// ls_cuerpo_contratos[i].dempr = ls_dempr_agree
// ls_cuerpo_contratos[i].agree = ls_agree_agree
// ls_cuerpo_contratos[i].ctn = ls_ctn_agree
// ls_cuerpo_contratos[i].datesig = ls_datesig_agree
// ls_cuerpo_contratos[i].cpropie = ls_cpropie_agree
// ls_cuerpo_contratos[i].dpropie = ls_dpropie_agree
// ls_cuerpo_contratos[i].cpais = ls_cpais_agree
// ls_cuerpo_contratos[i].dpais = ls_dpais_agree
// ls_cuerpo_contratos[i].linea = ls_linea_agree
// ls_cuerpo_contratos[i].cvaried = ls_cvaried_agree
// ls_cuerpo_contratos[i].pbr = ls_pbr_agree
// ls_cuerpo_contratos[i].working = ls_working_agree
// ls_cuerpo_contratos[i].breeder = ls_breeder_agree
// ls_cuerpo_contratos[i].buds = ls_buds_agree
// ls_cuerpo_contratos[i].plants = ls_plants_agree
// ls_cuerpo_contratos[i].hectareas = ls_hectareas_agree
// ls_cuerpo_contratos[i].year_plant = ls_year_plant_agree
// ls_cuerpo_contratos[i].codmov = ls_codmov_agree
// ls_cuerpo_contratos[i].year_usa = ls_year_usa_agree
// ls_cuerpo_contratos[i].year_act= ls_year_act_agree
// ls_cuerpo_contratos[i].movingday = ls_movingday_agree
//

sle_generados.text = string(i)

next
proxy_obj.loadtableagreements("d6a5ef292a3cc08a00434c0582965eac",le_estructura_agree[],TRUE)

Hi Chris, 

I've uploaded the Object to the thread

Hi Chris, 

I've added a creation statement:

ls_cuerpo_contratos[ll_filas_contratos] = create wsagroxagreements

But the error is still there. I think that what is null is the variables inside the object (cempr,dempr...), but I don't know how to access them...

Thank you very much again, Pepe. 

Hi Pepe;

  If "ls_cuerpo_contratos" is a structure ... NO. If "ls_cuerpo_contratos" is a User Object then a YES for instatiation (ie: CREATE).

Regards ... Chris