How do I add a custom mugshot to a powerup

[asd1994]

I've ben working on a new power up and it's pretty much done. I would like to have it set the mugshot to a custom one I made, like how the Invulnerability powerup does, but I can't figure out how. I've tried using A_SetMugshotState and a custom SBARINFO file, but the new face doesn't pop up at all. Then when I take damage or shoot a bunch, it reverts back to the normal face after the pain/attacking faces and I'm not sure why.

My current code:

 

For the powerup itself:

  Pickup:
    TNT1 A 0 A_SetMugshotState("TripleFace")
    TRIP A 0 Bright A_GiveInventory("TPowerWeaponLevel2",1)
    Stop

 

And the SBARINFO:

mugshot "TripleFace"
{
    TFACE -1;
}

 

I do have the actual image named "TFACE" and it has it's offsets set to line up with the normal face too. 

 

Any suggestions?