Biztalk BRE not evaluating condition correctly

Question

I am implementing a simple BRE example from Biztalk Certification Guide. My policy is composed as follows:

Seems easy. But then I am trying to test my policy with XML that has LoanAmount = 20. And BRE tells me, that 20<100 = false:

Test Expression: TypedXmlDocument:LoanApp:/LoanApp.LoanAmount < 100
Left Operand Value: 20
Right Operand Value: 100
Test Result: False

When I am testing policy with the same XML that has LoantAmount = 10 everything works fine:

Test Expression: TypedXmlDocument:LoanApp:/LoanApp.LoanAmount < 100
Left Operand Value: 10
Right Operand Value: 100
Test Result: True

Seems to be some awkward magic.

Answer 1

Just recognized that it is compared as string, because LoanAmount schema element is a string type.