Cell expressions in the header.

Do you mean how do you get those values into ASSIGNMENTS?

I want to edit the header.

All the cells where it says =LOADSTR(###)  is basically doing a lookup of the number in brackets, based on the language PCDMIS is running in.  It's done this way so that the report templates work with different languages.

You can simply delete the LOADSTR(###) text and type "Part Number" and "Job Number" in there in the appropriate cells.

Then save the Lebel template and refresh the report.

All the cells where it says =LOADSTR(###)  is basically doing a lookup of the number in brackets, based on the language PCDMIS is running in.  It's done this way so that the report templates work with different languages.

You can simply delete the LOADSTR(###) text and type "Part Number" and "Job Number" in there in the appropriate cells.

Then save the Lebel template and refresh the report.

I tried your method because it's faster and it doesn't work. it doesn't show me anything.

I think that information in the File header would have to be modified when job number changes if you do it that way as that is the data you input when making a new program. If you are using that file header menu there, you can completely ignore my method. I am not at work anymore so I can't play around with it.

All you have to do is make the Part Name and Serial Number cells 

= "Part Number: "

= "Job Number: "

Have you looked at the help files for this topic?  PC-DMIS Help Center - 2023.1 (hexagonmi.com)

Yes, I always try HELP, but sometimes it is not written in a simple language and if you haven't programmed for some time, you don't always understand where to go, how to write or what to do "step by step". Beginners need simple language to understand. If you don't understand, you will never be good at what you do.
Many times, the forum is more helpful for me than HELP at my stage.
This is just my opinion...

Thank you!

I agree, Malgorzata. I learned how to do the file header customization 2 months ago, learned it from scratch on my own, and with some help from others. Now I have a better understanding. The help file could only get me so far. There's a lot more you can do than what is shown in help.

As seen here in this post. SABarber  was a big help in me understanding.

nexus.hexagon.com/.../customizing-report-colors

Thank you very much, I will definitely study it!