how to add custom parameters to BOM (global), truncate Part name

Hi,

I've started to work with automatic BOMs and I'm struggling to list part name and part number.

our components are named as follows:

P00XXXX_PartName

Now, by adding the following relation in the assembly drawing (repeat region, relations):

Part_number = EXTRACT(asm_mbr_name,1,7)

I was able to add Part_number under a part number column to just get the P00XXXX portion (rpt > rel.. > user defined)

I then added 2 more relations:

actual_length = STRING_LENGTH(asm_mbr_name)

Part_name = EXTRACT(asm_mbr_name,8,actual_length)

and then tried to add Part_name to a part name column (rpt > rel.. > user defined) but that then everything disappears in the table.

Also, this just seems to add it locally, to the current drawing. how can I add relations/parameters that can be used in all drawings etc?

Any hints are greatly appreciated.

Thanks,

Andreas