Custom hands

I want to add a new player model, but do not know how to add a model of hands.
I have already added the models themselves for weapons but how to add them to the script?[attach=5131,none,1280][/attach]

I have created model studio “v_mp5_body1_model10.smd” for mp5 with new hands,compile it, then i have added this to playermodel manifest
//Viewmodel index. (we can have multiple viewmodels in source)
“0”
{
“arms” “10”
}

“1”
{
“arms” “10”
}
}
but there is still old hands so how to fix it?

Problem solved

So how did you fix it?

Asking for the people who will in the future google this and find the typical answer of “nvm I fixed it”.