When creating or altering TPX panels you need to take care of variables if they are followed by a hyphen?
A hyphen '-' after a variable causes the variable and the hyphen itself to vanish instead of being displayed.
If directly after the hyphen a non blank character is coded, that character also vanishes from the display.
% &XPTNAME-User is displayed as ser
Solution is to code a dot after the variable as delimiter:
% &XPTNAME.-User is displayed now as TPX-User
assuming that the variable &XPTNAME contains the String 'TPX'.