CSV format report

Is there any limit of fields in a format of a .csv report?.

Im working on a report with 87 variables that has to be saved in a csv report, each 5 minutes. The report works fine, but when i try to put the heading into the report, a string with the name of each column, 87 fields separated by commas, citect cant even compile de project. if i use a heading format with less fields, there are no problems.  

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