<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><HTML DIR=ltr><HEAD><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"></HEAD><BODY><DIV><FONT face='Arial' color=#000000 size=2><SPAN class=postbody>I have what I think is a very simple
rule to implement, but I can't find a way to do it without "cheating" by using
an eval/function. Here's the basic rule in English: <BR></SPAN>
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<TD class=code><PRE>Reject a claim if it contains a treatment that has already been claimed more than 70 times
in the same calendar month. </PRE></TD></TR></TABLE><SPAN
class=postbody><BR>In other words, I need to count the number of instances of
the treatment that have already been paid. <BR><BR>Assume for the sake of this
discussion, my facts are instances of the <SPAN
style="COLOR: darkred">Treatment</SPAN> class. <BR><BR>If I replace "70" with,
say, "2" in this rule I could do this: <BR></SPAN>
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<TD class=code><PRE>rule
when
Treatment(id=="t1", status=="pending")
Treatment(id=="t1", status=="paid")
Treatment(id=="t1", status=="paid")
then
assert ( new Rejection("reason"));
end
</PRE></TD></TR></TABLE><SPAN class=postbody>Unfortunately, I can't
simply replace "70" with "2", and using the same strategy to check for 70
instances doesn't seem quite right. <BR><BR>Am I missing something very simple
here? Are there standard strategies to deal with this type of
rule?</SPAN></FONT></DIV></BODY></HTML>