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Error in transfer change from crowdsale wallet to payee wallet
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?