Question about user mode key definitions.

[webmasterpdx]

I call a function from a user mode key definition. When I clear the input line and put it in user mode and hit the key, the program is run.
However, if I put a number on the input line and hit the key, the old definition is run instead.
Why?
Note I'm redefining KS_Minus (the Base command) with a program that has a menu with hex, oct, bin, dec and exit as options. I want to have this program run when I hit shift-base and change the input line to the appropriate base. I have the menu part written, but the options (other than exit) don't do anything yet. So, the program runs if the input line is clear and I'm in user mode, but the original Base integer editor pops up instead if there is something on the input line.
Thx
-Donald