Jumpscares

[Ank2503]

void scary2(string &in asParent, string &in asChild, int alState)
{
AddTimer("", 1.0f, "flyingmale");
PlayGuiSound("15_man02_whimp.snt", 1.0f);
}
void flyingmale(string &in asTimer)
{
SetEntityActive("flyingmale", true);
AddPropImpulse("flyingmale", 1.25, -2, 18, "world");
PlaySoundAtEntity("Player", "24_iron_maiden", "Player", 0, false);

i make this script but i have 2 questions:
1)how to make entity(flyingmale)after 1 second disabled( SetEntityActive("flyingmale", true); script
2)my entity doesn't impulse,moving,what's the problem?