Dynamics AX Source: How to modify the statement parameter dynamically at runtime
The statement parameter is
available in the data flow properties list. Follow these steps to set up an
expression:
 - Create a variable that can be loaded with the desired statement.
- Right-click on the data flow canvas and select
     the Properties menu.
- Scroll down and find the properties in the group
     called Misc.
- Note the name of the property you want to modify
     dynamically at runtime. It will be named something like this:  [Dynamics AX
     Source].[Statement]. This
     is the property containing the SELECT statement.
- Scroll down and find the Expressions property.
     Set up an expression for the property noted above using a variable to
     modify it dynamically at runtime.