Multiple Values in Command

I'm trying to supply multiple name and value parameters programmatically to
a vendor command. Argh! Frustrating. I'm trying this:

<command> NAMEVAL(&NAMEVAL)

Where &NAMEVAL should look like this:

(PRM EI0152015060184143) (FLAG I)

And when I look at the value of &NAMEVAL in debug, it does look like that.
But the command processor is kicking because it's just seeing one long
value rather than two values. How can I construct this so the &NAMEVAL
parameter has two names and values, (PRM EI0152015060184143) and (FLAG I)?

Thanks!