Error in transfer change from crowdsale wallet to payee wallet

2018-02-23 10:32:10

I need to transfer spare change amount in payee's account.

for that i use beneficiary.transfer(diffAmount); but it didn't work.

i search in OpenZeppelin document if there are any function for that like wallate.transfer(beneficiary,diffAmount); but couldn't find any reference.

So is there any method by which i can do transfer balance from wallet to user's account?