Refresh values from CSV Based on condition

[dikken20]

Hi

I've got Sheet1 with date imported from CSV between A1:Y2000.
I can refresh manually or by a sub, HOWEVER, I would like to refresh the data based on a condition or a function (UDF) located on Sheet2.

For instance:
On Sheet2 , in Cell A1 there's a random value. (It's not really random, but just for the illustration of the example it is).
I would like B1 to has a condition or a function that check if the A1 is greater than 100, then refresh the data in Sheet1.

Any solution for this?

Thank you