I am using CR XI R2.

I have four parameters necessary to run the report:
Formula,
Container (ie., box, bag, pail, etc),
Date (to run production),
Weight (to be produced)

In addition to the data entered in the parameters, I have the following database fields on the report:
Component (ingredients of part number selected in Formula parameter) ,
QtyPerLb (of each Component listed in Details section.

I am designing a report in which I need to multiply QtyPerLb by the number entered in the Weight parameter in order to get a total weight per component.  When I try to write a formula to accomplish this, I get an error:

"A number or currency amount is required here."

and it highlights the Weight parameter:

{Structure.QtyPerLb} * {?Weight}

How can I write the formula correctly to accomplish my calculations?

{Structure.QtyPerLb} is a Number field and {?Weight} is an integer entered by the user.

kevlray,

Your comment about it defaulting to a string made me check the parameter.  I changed the Type from 'String' to 'Number' then checked the formula for errors.  It successfully returned the "No Errors Found." message!

Thank you for your assistance!  Now I just have to figure out if CR can generate lot numbers for me.  I'll post in a new Topic for that.