[playbox12]

Well, yeah, it makes sense GiveDamage doesn't register it as the game is probably more of a deal forget system. The grenade is thrown and damage is dealt, who threw it is unknown. TakeDamage should indeed work, I forgot it gets called whenever the player takes damage no matter what the cause is. However it depends how the team system works in samp, the no damage to friendlies is native so it can very well be that the damage is just never processed instead of set to old health.