Trying to edit a form a did in base?

[tbluhp]

How can I edit the length the input for the text of a form value that I did in base?

[DrewJensen]

Do you mean you want to set a max value for the length of a string that can be entered into a GUI control.

Open the form in edit mode. ( right click on the form name and select edit )

Select the control. ( If you used the wizard to create the form be sure to use CTRL-CLICK to select just the text box control )
Right click and select CONTROL
In the control property editor, on the General tab, you will find a property "Max. text length" enter any value greater then 0.

That will end input when you reach that number of characters.