Error During testing of NEW PDF Reporting

[Domearian]

I am getting an error when testing a PDF Report which I do not understand:

Error 1 : Task 'New step' Attachment template. Expression 'OFFAL CH  1 - 3°c' is invalid due to: Arithmetic expression '("OFFAL CH  1"-"3°c")' has inputs of an invalid type 'Unknown'.

The input type is DECIMAL, the same as the others. The data entered is purely a decimal number, no calculation at all. The field in the table is the same as the others:

If I remove the OFFAL item from the report, I get a report as expected. So what is happening here? Why am I getting the error when the data is the same for all fields?

[Trevwiller]

are you able to show a picture of the expression as you have it typed in?

[Domearian · Accepted solution]

I managed to find out what the problem was. The FIELD name had an extra SPACE in there that shouldn't have been there. All sorted now.