[Exim] Filter condition?

Well folks,

I am tooling on with DCC and now it comes to filtering.

DCC adds a header such as

X-DCC-dcc.uncw.edu-Metrics: statler 1201; Body=1 Fuz1=1 Fuz2=1


I would like to trap this in a filter if "Fuz2" is "bigger then 5 or equal
to 'many'



The problem is that dcc.uncw.edu might vary dependin on which server it
pulls from.

Is that doable in exim 4.40?