Hello Solidsnake14, i tried yours in the script and it did the same as the others. 
basically in Dayz, i type /spawnbobcat. 
it spawns a bobcat. 
i then open console. 
i type "Refresh" and "Refreshall"  
it tells me the Resource which i added to replace the models has loaded. 
i press "p" and ehad to resources, Refresh that. search for the resource which will replace. 
i click start and it loads up, and the bobcat "Flashes on and off" so on the system its worked but i still see the same bobcat 
what else could be the issue?