If you're trying for a votemute that works like voteban add this to either your basevotes.votes.cfg or funvotes.votes.cfg
Code:
"mute"
{
"title" "Mute #1?"
"type" "confirm"
"trigger" "votemute"
"percent" "75"
"votes" "4"
"approve" "admins"
"cmd" "sm_gag #1"
"params"
{
"1" "player"
}
}