Sales Header: text + "No."

dyn45

hi guys,

I am working something with Form 42 Sales Order and I have there one problem that I can not solve.

On this form on Sales Header we have field "External Document No.". I would like, when I type in that field for ex. 'T' and press Enter, to see there T+"No."

Example:
Sales Header No. is 12345. I type in the "External Document No." T, press Enter and automatically see there T12345.

I've tried few solutions but can't find the right one. There is only T in that field.

Any solutions from you?
thanx

kine

Have you tried to add the code into OnValidate of the fields (on table or on the form if connected just to the one form)?

Something like:

OnValidate()

  If "External Document No." = 'T' then
    "External Document No." := "External Document No." + "No.";

dyn45

tried....
something like that.... it is a simple mistake that i did not look at!
i did that but in the other way, obviously the wrong one

thank you kine