# How do I format symbol parameters from a database library?

I have a database library with a column containing the tolerance value for all my passive components. It always shows this value as a decimal value instead of a percentage value. How can you translate the parameter fields to fit your needs? 
As another example, with the maximum voltage parameter, it would be awesome to append a "V" after the value.

##### Post Metadata
- Posted at: over 4 years ago
- Author title: Hardware Engineer
- Net upvotes: 1


## Comments
### Comment 1

I think Altium simply pulls the text from that database field, and there is no way to format the text in Altium. You would have to add the V, or the %, in your DB backend. The only thing Altium can do is 
You could format the decimal values in your BOM in your Excel template, but you probably want to see the formatting in the schematics, too.

##### Comment Metadata
- Posted at: over 4 years ago
- Author title: Senior HW Engineer at Etteplan


#### Reply 1

That's a bummer... It would be great to have this kind of feature (like in Mentor Expedition). But it's a great idea to modify the DB backend to get the right format in the schematic! I'll do that then, thank you very much.

##### Reply Metadata
- Posted at: over 4 years ago
- Author title: Hardware Engineer



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