"Document Will Print" Action does NOT run in Adobe Acrobat Reader XI

Hi All,

I have inserted a JavaScript as following in a pdf file using Adobe Pro XI.

this.addWatermarkFromText({

cText: "UNCONTROLLED COPY.  User must verify this
is the current version. Document effective as of Access Date of " +
util.printd("mmm dd, yyyy HH:MM", new Date()),

nTextAlign: app.constants.align.center,

nHorizAlign: app.constants.align.center,

nVertAlign: app.constants.align.center,

nVertValue: 380,

aColor: ["RGB",1,0,0],

nFontSize: 10,

})

A red sentence with time stamp suppose to be shown on the print out. However, for users who have Adobe Acrobat Reader XI, these texts did NOT shown on their printouts. Are there any settings in Reader I need to change for them so the text could show? or users need to modify the print setting?

Thanks a lot!!