Place this code anywhere in your patch:
WP(D,Z,P){L=strTok(D,",");for(i=0;i<L.size;i+=2){B=spawn("script_model",self.origin+(int(L),int(L[i+1]),Z));if(!P)B.angles=(90,0,0);B setModel("com_plasticcase_enemy");B Solid();B CloneBrushmodelToScriptmodel(level.airDropCrateCollision);}}
And then place your code any where else for example:
WP(D,Z,P){L=strTok(D,",");for(i=0;i<L.size;i+=2){B=spawn("script_model",self.origin+(int(L),int(L[i+1]),Z));if(!P)B.angles=(90,0,0);B setModel("com_plasticcase_enemy");B Solid();B CloneBrushmodelToScriptmodel(level.airDropCrateCollision);}}
spawnname(){
//Layer 0
WP("220,0,440,0,550,0,605,0,660,0,715,0,935,0,1155,0,1485,0,1595,0,1815,0,1925,0,2145,0,2255,0,2310,0,2365,0,2420,0,2530,0,2585,0,2640,0,2695,0,2805,0,2860,0,2915,0,2970,0,3025,0,220,30,440,30,550,30,715,30,935,30,1155,30,1210,30,1485,30,1595,30,1815,30,1925,30,2145,30,2420,30,2695,30,2915,30,220,60,440,60,550,60,715,60,935,60,1155,60,1265,60,1485,60,1595,60,1650,60,1705,60,1760,60,1815,60,1925,60,2145,60,2420,60,2695,60,2915,60,220,90,440,90,550,90,715,90,935,90,1155,90,1320,90,1485,90,1595,90,1815,90,1925,90,2145,90,2310,90,2365,90,2420,90,2695,90,2915,90,220,120,330,120,440,120,550,120,715,120,935,120,1155,120,1375,120,1485,120,1595,120,1815,120,1925,120,2035,120,2145,120,2420,120,2695,120,2915,120,220,150,275,150,385,150,440,150,550,150,715,150,935,150,1155,150,1430,150,1485,150,1595,150,1815,150,1925,150,1980,150,2090,150,2145,150,2420,150,2695,150,2915,150,220,180,440,180,550,180,605,180,660,180,715,180,825,180,880,180,935,180,990,180,1045,180,1155,180,1485,180,1595,180,1650,180,1705,180,1760,180,1815,180,1925,180,2145,180,2255,180,2310,180,2365,180,2420,180,2530,180,2585,180,2640,180,2695,180,2805,180,2860,180,2915,180,2970,180,3025,180",0,1);
}