Progress bar maximum

Another question. I’m trying to add a progress bar for someone who is collecting donations. In the column field, I have it directed to “amount raised”. I thought in the maximum field, I’d put “fundraising goal” so the image would show amount raised as a percentage of the total goal. It appears as though the app is reading “100” as the maximum. When I click on “custom” for the maximum field, “100” is populating the field.