How to modify iRule "Data Goup List" from System

I see that iRules disables TCL language for communicating to the system.

 

However, I want to communicate between a system application and iRules evaluation rule.

 

How can I do this?

 

 

a) Can I use some method like iControl to add/remove/modify strings in the "Data Group List"?

 

b) Can I have the system application put evaluation results in a system file to be read by a iRule?

 

 

I do not want to control the up/down of a node from the system, but instead I want to provide an evaluation status of a node to a iRule for further processing.

 

 

What is the best way to do this?

 

 

-RG