Pass Structure Fields to rule from workflow

Hello,

details of the scenario:

i have a workflow and a workflow container element(data type zstructure).

This structure has 10 fields.

I have created a container element in Rule also(same data type).

I want to pass few fields of this structure from workflow container to -> rule container.

Why i don't pass the entire structure.

Because : if this structure container 10 fields and all fields are filled then in FM( defined in rule)

AC_CONTAINER table container 1 entry for this container element.

And all field values are in concatenated  form in Field VALUE of AC_CONTAINER.

As,i need only 2 fields (to determine possible agents) to be passed to rule from workflow.

So that i don't have to split that concatenated string.(it may lead to errors,because if i hard code string lenghts ,some times it is possible string lenght differs ).

I have also done, binding from workflow contianer to rule container(it has no errors).

But i can't see those values in AC_CONTAINER table.

Please guide, is it possible to only pass few fields of a structure from workflow container to rule contianer.

I don't want to create 2 separate elements (in both-workflow & rule) for this purpose.