i ve tried at the command window

set classlib to "lib\sgridtextbox" additive && it ok
but at the form init event giving this error
"property CURRENTCONTROL is not a method or event " for .CurrentControl('Text1')

would you like to make for me a sample form from nancy Textbox Class Code and from your For..Endfor code do . give the class name how you want ? if you have a enough time ...
codes is ready you'll only combine its... :)