I have two issues with the same field i am working with.

In my system I have 5 different types of purchase orders that can be created.  In the database these types are identified by 1, 2, 3, and 4.  I have a field in my report called PO Type and it pulls this number in.  I am trying to create a parameter that will allow a user to either look at all types or pick one.

I have tried created both a parameter that represents a number as well as a string.  The parameter is static and I pull in all values.  I also create a custom value called 'All'.  I assign descriptions to these parameters and allow multiple values. 

the first issue I have that the value field will not hold. I have added it several times, saved the report, but it always reverts back to none. 

My next problem is  when adding a record selection formula I use the following statement

(is {?POType} = 'All'
then true
else
{PO.Purchaseordertype} =  {?POType})

when I put this in Crystal tells me that where I have {?POType} a number value is required there. 


With both of these issue im not sure how to proceed.