[Help] Use of {{#expr: }} in table width

So yeah. I'm currently using rounded tables in order to mimic ingame stat bars in this template:
http://fireemblem.neoseeker.com/wiki/Template:FE7PlayerStat

However, I've been trying to use {{#expr: }} in order to change the width of the tables depending on the character's stats and max stats with something along the lines of:

width="{{#expr: {{{MHPBase}}}*3 }}"pix

in my tables. I'm guessing from my failure that this is obviously wrong.

I'd much appreciate any help in trying to understand how to go about doing this properly.

Link related (It's the result I'm going for):
http://fireemblem.neoseeker.com/wiki/User:GhostMember

Nothing seems to be wrong according to the guide. It's just a simple multiplication expression.

Jesus Christ it worked like a charm. Thanks.

Worked fine in my other table, though. :/

Yeah, css error. The {{#expr: tag is fine.

And now I'm thinking if there is a mile option.

<img src="rickrollgif.gif" style="width:100mi;height:100mi" />

quote tekmosis

With width/height you can only use px, pt, em and %
seems like just a browser glitch when you used pix.

cm also works, but I can't see why you'd want to use that.