I need help, I have 12 months of data, each in a separate tab. I have a summary tab summing all the months. for example in cell C7 of the summary tab it sums all the months Jan-Dec C7's. But I want to condition this information. I want to enter "from" and "to" months on my summary tab and have it sum just those months.

so for example if on the summary tab
"From" cell A1 = Jan and
"To" cell A2 = Feb
in the summary tab's cell C7 it sums Jan C7 + Feb C7.


But if
A1 = Jan and
A2 = Mar
in the summary tabs cell C7 it sums Jan C7 + Feb C7 + Mar C7

is this possible? please help. Thanks.