error on vívoactive 4: 3.60

from ERA: this code

class PSX1_View extends UII.WatchFace
{
    const 	cDFN		= 2;
    var  	mDFN		= cDFN;//line 74 ERROR

    ..,
}

Error Name: Symbol Not Found Error
Occurrences: 1
Devices:
    vĂ­voactive® 4: 3.60
App Versions: 1.4.42
Languages: eng
Backtrace:
    PSX1_View.<init>:74