I tried with two forms : - one with a formula length of 200 characters which was rendered both in GET and POST HTTP requests - one with a formula length of more than 200 char which gives me the following message in both cases : "The parameter 'chl=111111111111111111111111111111\\111111111111111111111111111111\\111111111111111111111111111111\\111111111111111111111111111111\\111111111111111111111111111111\\111111111111111111111111111111\\111111111111111111111111111111' exceeds the maximum formula length of 200 characters." Marine
I think is not Google Charts maximum formula length limit but HTTP GET limit. Try in HTTP POST
Arnaud.
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