Blessing of spellwarding and protection mouseover

How would I make a macro that would be a mouseover for blessing of spellwarding (if talented) and if not talented would mouseover for BOP? Also casted on self if not targeting anyone. I’ve tried

#showtooltip
/cast [@mouseover,exists] [known:204018] Blessing of Spellwarding;Blessing of Protection

and a few other variations without @mouseover and using the setting in game to have everything mouseover, just cant seem to get anything working.

[this, and this]
[this] [or this]
#showtooltip
/cast [known:204018,@mouseover,help,nodead] [known:204018] Blessing of Spellwarding; [mouseover,help,nodead] [] Blessing of Protection

That said, Spellwarding doesn’t replace Protection in Retail, you get both.

thanks bro works perfect. you’re doing god’s work out here!