Just make sure that you DON'T use a "zero expressions" pose .pz2 to zero the expressions!

I you do, ALL expression dials will be added to the dependant parametes list, which will blow up your character and may cause trouble with other expressions.

So go step by step:

• Set value 1,000 and dial in everything you need
• Now set value to 0,000 and ZERO all dials used before, "ONE BY ONE". Repeat: "DO NOT use a "zero expressions" pose .pz2 to zero the expressions!"

It's a bit tedious (like many of Poser's functions). But it's worth the extra time to keep you out of trouble and getting inexpected results in the future.