first thanks for help guys!

i think this will not work beacuse i must put this in while loop and then i=0 will be whole time zero, and i++ also will report error in c-script.

There is complete function where i need this
Code:
action act_emitter()
{
	while(1)
	{
		for(k = 0; k < 3; k++)
		{
			p_lightning1_size = 4+random(4);
			i = vec_dist(my.x,p_effect_target);
			j = floor(i/32)-1;
			vec_set(temp,my.x);
			vec_set(temp3,my.x);
			for(i = 0; i < j; i ++)
			{
				vec_diff(temp2,p_effect_target,temp);
				vec_normalize(temp2,32);
				vec_add(temp3,temp2);
				temp3.z += (1-random(2))*(8+k*3);
				vec_diff(temp2,temp3,temp);
				effect(p_lightning1,1,temp,temp2);
				effect(p_lightning2,1,temp,temp2);
				vec_set(temp,temp3);
			}
			vec_diff(temp2,p_effect_target,temp);
			effect(p_lightning1,1,temp,temp2);
			effect(p_lightning2,1,temp,temp2);
		}
		
		my.tilt += 2*time_step;
		my.tilt %= 360;
		vec_set(temp,vector(700,0,0));
		vec_rotate(temp,my.pan);
		vec_add(temp,my.x);

		c_trace(my.x,temp,IGNORE_MODELS);
		if(trace_hit)
		{
			effect(p_laser_hit,3,target,normal);
			vec_set(temp,target);
		}
		vec_diff(temp2,temp,my.x);
		j = vec_length(temp2)/16;
		for(i = 0; i < j; i++)
		{
			vec_lerp(temp3,my.x,temp,i/j);
			effect(p_laser,1,temp3,temp2);
			effect(p_laser2,1,temp3,temp2);
		}
		time_factor = 1-key_ctrl*0.75;
		wait(1);
	}
}