Expression Invalid

[Saurabh Pathak 2]

Hi All,

I have 3 columns, say,A | B | C.

STEP 1:, thing I want is to hardcode the values of first row for column B abd C. That has been done.

Then, STEP2: Value of 1st row of column C is to be copied to column B's 2nd row. And this sould continue to last. (This is also achieved).

And Step3for each row, Column C = Col B - Col A, must be the calculation.

But, for step 3 as I write the custom expression of subtraction, I could see correct result in Preview Tab. But, as I click on Apply it gives error. "Expression is not valid".

Any help would be appriciated.

Thankyou.

[Andrew Berridge]

Please supply the expressions you are using - it's not possible to troubleshoot without seeing these.

Thanks!

Andrew

TIBCO Data Science