Help with first person walking animations

[CanMan]

tnt1 a 0 a_overlay(-1,"fplegs",false)

fplegs:
FPST A 1 a_overlayoffset (-1,0,70 + pitch-1)
FPST a 0 a_jumpif (momx > 1 momx < -1 momy > 1 || momy < -1,"walk")
loop

walk:
WALK ABCDEFGHIJKLMNO 1
{
a_overlayoffset (-1,0,70 + pitch-1);
A_JumpIf(velx = 0 || vely = 0, "FPLEGS");
}
loop
}

fplegs doesnt appear directly when i put a_overlay and it crashes when trying to walk any help to fix this would be nice

[Jarewill]

I can only guess without having the project for testing.
I suspect it's because the jumps are done incorrectly.

The first one should likely look like this: A_JumpIf(velx != 0 || vely != 0, "walk")
And the second one should be returned because it's in an anonymous function: Return A_JumpIf(velx == 0 && vely == 0, "fplegs");