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Hello @limarob
Thank you very much for using our plugin.
DATETIMESUM operation returns a date object, and you must use the GETDATETIMESTRING operation to transform it into a text with date format as follows:
GETDATETIMESTRING(DATETIMESUM(fieldname3, 'dd/mm/yyyy', -49, 'd'), 'dd/mm/yyyy')However, if fieldname3 is a date field, the process is simpler:
CDATE(fieldname3-49, 'dd/mm/yyyy')Best regards.