Help with multiple mob skins code

so basically, I inserted this bit of code 

int rando = (int)(Math.random()*2)+1
                    
                    if(rando==1){
                        return new ResourceLocation("funni_cretins:textures/frog.png");
                     }
                    
                    else{
                        return new ResourceLocation("funni_cretins:textures/frog2.png");
                        }

into the areas where it's importing the texture, I am not smart enough to figure out why it can't compile so any help would be appreciated