Unable to see the falling edge pulse in Quartus simulator

Hi FvM,

Thanks for fast response. I agree with you. But, I still do not see a glitch during timing simulation. I found out this seems like the limitation of Max II devices. I can see a glitch in timing simulation if I used cyclone II devices. In cyclone II, I can enable glitch filtering option (assignement-->settings-->simulator settings-->glitch filtering option). However, in max II, the glitch filtering option is gray (inactive).

Question:

Is this settings caused me unable to see a glitch during timing simulation? or is there any different in term of settings in max II and cyclone II?

Thanks in advance.....