[rules-users] Decision table problem

[Alex Esmann]

Hey

I am using drools with a decision table (XLS). One of the conditions in
the table is a call to a java method, c.checkFoo($1,$2)), where c is of
type Foo. When I first created this method it took 2 integers and that
worked fine, now I need to update it to take to strings instead. I have
updated the method but when trying to it I get some errors.

Some examples of values in the cells for this condition are

[ 901, 910 ]
[ 90AAA, 90ABC]

For the first value I get this error: 

The method checkFoo(String, String) in the type Foo is not applicable
for the arguments (int, int)
For the second value I get this error:

The method checkFoo(String, String) in the type Foo is not applicable
for the arguments (int, int)
Syntax error on token "AAA", delete this token
Syntax error on token "AAC", delete this token

How do I convince drools that the values in the cells should be read as
strings and not integers? 

Kind Regards
Alex