How to change format Date with Constants.FIEL_DATE ?

Hello,

I want to create a report in ARIS. And i want to display the date with format DD-MMMM-YYYY like "13-September-2019".

I use script "outputObj.OutputField(Constants.FIELD_DATE, getString("ID_DEFAULT_FONT"), 11, RGB(0,0,0), Constants.C_TRANSPARENT,  Constants.FMT_RIGHT)", but this output MM/DD/YY like "9/13/19".

How to change format date MM/DD/YY to be format date DD-MMMM-YYYY?

please help me, and thank you very much for your attantion.