In reply to dave_59:
I tried using “z” since its a wire but in that case i see it stays z, the value to this wire “hb_valid_in” is being provided from the sequence in this particular testcase and I don’t want it to be overriden by this assign. In this case its not taking the value from sequence but it stays z but if I don’t do assign at all for this particular case, it works so I was looking for a way to not do these assigns for a particular test, not sure if this is doable.