Shield of Virtue Macro

Is there a macro that will work to activate Shield of Virtue and cast Avenger’s Shield in one press? I tried the usual:

/cast Shield of Virtue
/cast Avenger’s Shield

It works…but sometimes it doesn’t cast Shield of Virtue fast enough apparently and the Avenger’s Shield goes off without the silence buff. I’m not sure how that’s happening, but that’s the only thing I can figure.

/castsequence reset=3 Shield of Virtue, Avenger’s Shield

Thanks, I’ll give it a shot.