Help with a macro

Don't know if this is the right place...
Trying to build macro that cast renew:
With ctrl in my partner, if not ctrl casr renew on mouseover and if not mouseover cast renew in target/me if not target.
So far I'm trying:

#showtooltip Renew
/cast [mod:ctrl, @Colock, exists][@mouseover, help, nodead][] Renew

Can't make the mod part to work

Thanks

Try to add "; Renew" at the end of the macro. Also @Colock doesn't work in TBC iirc you need a "target=Colock". And if that doesn't work try separating the macro into 2 /cast lines for each modifier.