insert free text to follow fixed initial values

[bestgroup]

Hi,

I need to get a module with a fixed initial value (like "A-") but I don't know how allow to insert a following text. At the moment I found a partial solution with initial values (putting in initial values the text "A-"). But I wish it was not possibile to change or delete the initial values but it should be possible to insert text to follow.

Could you help me?

thx

[Marc_Dillon · Accepted solution]

There's not a great feature for this kind of thing in Appsheet.

You can add a valid_if to force it to start with "A-"
STARTSWITH( [_THIS] , "A-" )

The user will have to not delete it, or re-enter it, the system can't really do it for them.

Or have them just enter the ending part, and add the "A-" with a form-save action.

[bestgroup]

Thank you. Is good enough adding a "valid if" as you suggest, while mainteining the value "A-" in the initial values form. Bye