How to show value based on calculation

Hi there,

Newbie to using Javascript to calculate and validate fields.

Having a bit of trouble getting this to work properly. Here's what I'm faced with:

There are 3 fields: [b]AmtPaid[/b], [b]75percentAmtPaid[/b], and [b]AmtReimbursed[/b]

The user enters the [b]AmtPaid[/b] (no maximum number here)

Then 75% of the [b]AmtPaid[/b] is calculated and shown in the [b]75percentAmtPaid[/b] field (still no maximum here).

How do I set the [b]AmtReimbursed[/b] to look at the [b]75percentAmtPaid[/b] value and see if it is 250 or less then if the value is less than or equal to 250 to display the value otherwise show only 250 if the [b]75percentAmtPaid[/b] is value is greater than 250?

I used the Calculate tab to calculate [b]75percentAmtPaid[/b] by using the Simplified field notation to: (AmtPaid)*0.75. This part works fine.

I've tried for the [b]AmtReimbursed[/b] field to use the Validate tab and set the Field value is in range: From 0 To: 250 and have the Calculate tab set the Simplified field notation to: (AmtPaid)*0.75. This creates an error message if I enter a value in the [b]AmtPaid[/b] field equal to or greater than 333.34 (because 75% of 333.33 is 250). The pop-up message says invalid because the value must be between 0 and 250 as soon as I tab from the [b]AmtPaid[/b] field.

Help!!

[i]I'm stumped to figure out the next step.[/i]