Dynamically changing subgrid 'data source' properties... via code?

Hi guys,

is it possible to change 'Records' property under the data source section of subgrid dynamically?

My goal is to write a plugin to dynamically create a custom fetch and attach to subgrid.

However, I will need to dynamically change 'Record' property based on a field on a parent form.

Lets' say if a field 'leaftask' = 0 then Records should be 'all records' otherwise 'related records'

please let me know if it's really possible to change the binding properties of the grid at runtime.

thanks