Acrobat Interactive Form Tax Calculation

[AquaMystique]

Hi, I'm currently a college student working on a project to create an interactive PDF form using a combination of InDesign and Acrobat.  So far I have everything figured out; however, I'm trying to figure out how to format the invoice form to calculate an 8.25% sales tax rate using the information in a "Subtotal" field (the Subtotal being the sum of 3 other fields).  Unfortunately, I have not found what formula to use to calculate the sales tax.  Attached are what I have so far.  I have used "Subtotal 1*0.0825", "Subtotal1*0.0825", and "Subtotal1*.0825" in both the Simplified field notation and the Custom calculation script sections and am unsure of where I'm going wrong.  Thank you for any help in advanced!

[Peru Bob]

I've moved this from the Using the Community forum (which is the forum for issues using the forums) to the Acrobat forum so that proper help can be offered.

[AquaMystique]

Oh, thank you! I'm still figuring out how to use this forum since this is the first time using any forum.

[George_Johnson]

Also, be sure to set the field calculation order. If you don't know what this means, post again.

[George_Johnson · Accepted solution]

If you're going to use space characters in the field names, you have to escape them with a backslash when using the simplified field notation option, like this:

Subtotal\ 1 * 0.0825

I'd personally remove the space from the field name though. They just cause trouble.

[AquaMystique]

Thank you for the help!! This worked perfectly.  I'll definitely keep that in mind for future forms.