Can I use a single freq. singnal to ecit in HFSS

In CST, we can write the ecitation by ourselves using vb. Can we do the similar thing in HFSS and get the relation about field and time?

How do you mean "single frequency signal"?,

Are you talking about only one complete period of a sinusoidal wave?

No VB codes in hfss, but you can write macros!
:D

ok,thanks! I'll try