How to use the triton.getConcreteRegisterValue function in triton

def _call(s):
            try:
                args = s.split()
                module, command = args[0].split(".")
            except:
                # exit slently, this is not for us
                return Pimp.CMD_NOT_HANDLED
            try:
                if module == "pimp":
                    self.handle(command, args[1:])
                    for r in self.triton_regs:
                        self.r2p.set_flag("regs", r, self.triton_regs[r].getSize(), triton.getConcreteRegisterValue(self.triton_regs[r]) )
                    return Pimp.CMD_HANDLED
                # not for us
                return Pimp.CMD_NOT_HANDLED
            except Exception as e:
                # this is an actual pimp error.
                print e
                return Pimp.CMD_HANDLED

def get_current_pc(self):
        return triton.getConcreteRegisterValue(self.pcreg)