when pre-assigned key pressed, no response occured

[NJUFerret]

I'm using multisim ver 8.x to simulate a RC low pass filter,

and place a potentiometer to observe the frequency response.

the pre-assigned key of the potentiomter is "A",

but when the key pressed, the value of the potentiometer didn't change.

This function is OK before, but now, it's invalid.

how to solve this problem?

thanks.

platform: multisim 8.x / Win 2003

[supsup]

"A" - incremenr,

"Shift+A" - decremenr.

[NJUFerret]

yes, this fucntion is OK before ,but now, no effect.

Press key "A", the value of potentiometer is just the same as before.

no change occure.

[NJUFerret]

The problem is fixed, just uninstall the software, and reinstall it....