ExtendedFieldSearch does not create a "setting" (which is what is "converted" from when you use "ConvertToIntention". Instead, it creates an intention directly. You would need to define the intention in the ExtendedFieldSearch. The problem you'll have is if you're trying to "re-use" the intention, e.g. in clickthrus after it was "consumed" by a search, you won't have a "setting" to re-create the intention from. If this is the case, you'd have to use "TextSetting" instead, though this is different and missing functions that ExtendedFieldSearch provides.
this is helpful. i removed the "addterm" piece of code all together and added $staticselectvalue$=$formfieldvalue$ to my search string ... and it seems to only be passing default.. no matter what i type in. either way this is helpful and thank you.