Hello, I have a problem with a mobile app. I wanted get the rowheight but it  returns 0. Why? Rowheight is supported in powerserver mobile. If I run in pbl it is working but if I run it in Appeon Workspace in my mobile it return 0. 

This is the code, there is nothing strange

datastore lds
long ll_total, ll_height

lds = create datastore
lds.dataobject = "mvl_d_cabecera_exp_prueba"
lds.settransobject(SQLCA)
ll_total = lds.retrieve()

//It contains 14 files
if ll_total > 0 then
ll_height = lds.object.ancho[1] //this is a computed with the rowheight()
messagebox("", string(ll_height))
else
return
end if

Thank you.