# How to compute aging if date format is in text/number column?

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edited 03/06/24

Hi All,

Would like to ask what formula I can use in row 4 to compute the aging (in days) between Actual Completion Date and Due Date.

All dates format are in text/number.

I tried with below formula in actual excel and it's working, however I'm getting 'Invalid value' in Smartsheet.

Formula used in row 4:

=DATE(VALUE(2000 + RIGHT([Activity 1]3, 2)), VALUE(LEFT([Activity 1]3, 2)), VALUE(MID([Activity 1]3, FIND("/", [Activity 1]3) + 1, 2))) - DATE(VALUE(2000 + RIGHT([Activity 1]2, 2)), VALUE(LEFT([Activity 1]2, 2)), VALUE(MID([Activity 1]2, FIND("/", [Activity 1]2) + 1, 2)))

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Hi @Asnithaa,

You are getting the #Invalid value message because your formula is attempting to put a "date" value in a column that is not set to "date" type. The only way to make that scenario work would be to have another column, set as "date", using the formula.

Note: I am only speaking to the error you are receiving, I have not looked into the formula itself to know if it is correct otherwise.

Hope this helps,

Dave

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