ondoattackscript

nohit.c

void main()
{
	void self;      // Entity running event
	void other;     // Entity attacking or receiving vs. self.
	int which;      // Attacker or defender event?
	int id_hit_by;  // Entity ID of entity attack hit.
	int id_attack;  // Entity ID of entity that performed attack.
	void type;

	type	= getlocalvar("attacktype");// Get attack type
	self	= getlocalvar("self");
	other	= getlocalvar("other");
	which	= getlocalvar("which");
	
	// Is this a defending event?
	if(which == 1)//openborconstant("EXCHANGE_RECIPIANT")
	{
		// IDs are not the same? This is how we prevent repeat
		// hits from the same attack.
		hit_by_id   = getentityproperty(self, "hitbyid");
		attack_id   = getlocalvar("attackid");
	
		// Different attack ID?
		if(hit_by_id != attack_id)
		{
		    // Is this the attack type we want? If so,
		    // set lasthit 0 (engine ignores attack hit).
		    if(type == openborconstant("ATK_NORMAL17"))
		    {
			changeopenborvariant("lasthitc", 0);
		    }			
		}				
	}
   
    	// Set hit id on self to attack ID for the next cycle.
	changeentityproperty(self, "hitbyid", hit_by_id);
}

The error I got now is
Script compile error in 'ondoattackscript': hit_by_id line 20, column 8