difficulty with keyboard/mouse input

[Warrior of the Light]

I'm working on a preset called AvsCAD and I want to be able to set the linewidth from 1 to 2 .. to 5 and back to 1. This is not a problem, it's just that if you hold the key for multiple frames, the counter keeps adding on. I thought I had a solution, but it doesn't seem to work.

Could anyone tell me what I'm doing wrong?
I've attached a tryout instead of the preset itself to prevent people from making remixes before final release.

Edit: general idea of what it does:

code:




qpulse=

 if qold=qnew

    then

        0

    else

        if qold=0

           then

               1

           else

               0

 



--So:-----



keyold|keynew|goal

------|------|----

     0|0    =|0   

     0|1    =|1   

     1|0    =|0   

     1|1    =|0