Getting error "Missing operand to closure"

Hi ,

	I am facing a problem in using zero-width negative lookahead
assertion. PERL regrex supports this . But if I am using this pattern
".*POST(?!AGENT$).*$" then its getting compiled but when I am running it
it's giving error " org.apache.regexp.RESyntaxException: Syntax error:
Missing operand to closure".
Any idea what is the reason for this. And how can it be solved.

Thanks
Priya Khanna

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