regex - Regular Expression for Amount Entry in uitextField in ios -

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please 1 me achieve this, need implement validation amount text field. here's regex need allow allows 1-6 digits before , 1-2 digits after dot. had try these ways, didn't solution.

1) http://www.mpatric.com/2012-07-13-fomatting-ios-text-input-on-the-fly
2) regular expression in ios

i haven't worked on ios before, don't know ios specific behavior regexes. check if works.

^(\d){1,6}\.(\d){1,2}$

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