replace only last part with the following
you had to create a new float for the knockback
Code:
new Float:Knockback[3]
Knockback[0] = put your desired value - get_distance_f(originF, ioriginF) * 0.5
Knockback[1] = put your desired value - get_distance_f(originF, ioriginF) * 0.5
Knockback[2] = put your desired value - get_distance_f(originF, ioriginF) * 0.5
set_pev(Ent, pev_velocity, Knockback)
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