on place:      
        if player's tool is ender portal frame named "&9&lBoyFarmer":
                loop blocks under event-block:
                        loop-block is bedrock:
                                stop loop
                        else:
                                set loop-block to obsidian    
        if player's tool is ender portal frame named "&9&lSandFarmer":
                loop blocks under event-block:
                        loop-block is bedrock:
                                stop loop
                        else:
                                set loop-block to sand