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I have tried
array('Number', 'match', 'pattern'=>'(^\d*\.?\d*[0-9]+\d*$)|(^[0-9]+\d*\.\d*$)'),
as I want to only allow positive values with the format of 1.00, 4.34, 234.98
I get this error though
preg_match(): Unknown modifier '|'
Your pattern should be enclosed by slashes, ie: