Extend length of the WTPart attribute Number characters upto 50 from 40 in Windchill PDMLink

I am using Windchill PDMLink Release 11.1 and Datecode with CPS M020 CPS30 Extend length of the WTPart attribute Number characters upto 50 from 40 in Windchill PDMLink Here are the errors that I faced The number of characters in this attribute value can be no more than 40. The number of characters currently entered is 41.