First off all thanks you for your answer.
I have just a textfield (with the name) e.g. TextField1.
Beside this field I've a field that must be filled from an other system of ours e.g. FillinField1.
The TextField1 is correct and no problems with it.
Only I've problems with the FillinField1.
It's making use of
form1[0].#subform[0].FillinField1[2] instead of just FillinField.
Our system can't work with all the characters of form1[0].#subform[0].FillinField1[2]
I see that text in when I open the saved PDF File in Adobe Reader, and open the FillinField1.
You see on the maintab a name, here is what it says
form1[0].#subform[0].FillinField1[2], also you see a headinginfo, but you see here the correct syntax of FillinField1, but our system is working with the name and not with the headinginfo.
I hope here is a solution for, because the solution to make the field "hidden" does not work. The filled in FillinField1 is not showing up.
Thanks again already.