Hi all,

I'm trying to add a STOP button on the screen for a merge process so the user can stop the loop if the number of certificates on the selected salesorder is high. I added a yield() statement to the loop and a check for the value of the instance variable ib_stop, but it loops through so fast that often times the STOP click is missed.  Sometimes if I double-click the STOP button, it works, but not always.  Here's the code:

//wf_merge_each
integer li_CertCount, li_ThisCert, li_x, li_rc

//Loop through all of the Certs in the ddlb
ib_stop = FALSE
cb_stop.visible = TRUE
li_CertCount = ddlb_certs.TotalItems()
for li_x = 1 to li_CertCount
	st_6.Text = "Merging " + string(li_x) + " of " +  string(li_CertCount) + " ... Please wait..."
	ddlb_certs.SelectItem(li_x)
	ddlb_certs.Event SelectionChanged(li_x)
	li_rc = wf_merge_one()
	if li_rc = -1 then
		return
	end if
	Yield()
	if ib_stop = TRUE then
		exit
	end if
next
if ib_stop = TRUE then
	st_6.Text = "Merged " + string(li_x) + " of " +  string(li_CertCount) + " ... Merge cancelled..."
else
	st_6.text = "Merge complete: " + string(li_CertCount) +" documents."
end if

cb_stop.visible = 	FALSE
return

Any thoughts?  I tried adding 4 more Yields() but that doesn't fix the problem.

TIA,
Tracy