Increase Formula Field Limit for Crosstab Query

Please see the following dialogue:

https://social.msdn.microsoft.com/Forums/en-US/c2515cae-8ad3-4f1a-a683-2e84bfc93847/is-there-a-textbox-limit-of-number-of-characters-query-displays-fine-but-form-with-textbox-does?forum=accessdev