'Undeclared Integer
I continue to get the same error code of undeclared Integer at the bold points below and I don't understand why(headache)-I am writing in solidity with with remix
**require(_value <= allowance[_from][msg.sender]);**
**allowance[_from][msg.sender] = allowance[_from][msg.sender] - (_value);**
What have I not declared? Pls Help thank you greatly in advance
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