i have no endless loop

action markierung()
{
while(my != NULL)
{
c_trace(my.x,vector(my.x,my.y,my.z+500),IGNORE_ME|IGNORE_PASSABLE);
if(you != NULL)
{
if(you.FLAG5 == ON)
{
anzeige1.visible = ON;
}
}
wait(1);
}
}