gt and le are string-wise comparisons. > and <= are numeric comparisons.
True statement, and a correct fix, but you should also point out that the OP is comparing the variable names as strings rather than their values. (There are single quotes around the vars....)

Do not rebuke them with harsh words ... but rather lead them gently - with URLs - so that they may learn wisdom.

In reply to Re^2: printing values within a given range by VSarkiss
in thread printing values within a given range by Angharad

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