I'm getting an error at PayPal "The link you have used to enter the PayPal system contains an incorrectly formatted item amount.
"

I've narrowed the cause of this to an entry in the attribute controller. Setting "Onetime Attributes Qty Price Discount:" to 1:-1.95.

This is the only time I get this error.

I want to offer a one time discount of $1.95 for the first item and rest at the normal price.

Thanks for your anticipated support.
Nick