Cc.LabelTTF not working in wp 8.0 cocos 3.5 js

cocos2d-x JavaScript
1

I am not able to get the stroke working I am trying with this and both are working on web:

                var blueColor = cc.color(0, 0, 255);
            var yellowColor = cc.color(255, 255, 0);
            var whiteColor = cc.color(255, 255, 255);
            var blackColor = cc.color(0, 0, 0);
            var fontDefBlueStroke = new cc.FontDefinition();
            fontDefBlueStroke.fontName = fonts.FontTTF;
            fontDefBlueStroke.fontSize = size * 0.5;
            fontDefBlueStroke.fillStyle = whiteColor;
            
            var labelTTF = new cc.LabelTTF(string, fontDefBlueStroke);
            labelTTF.enableStroke(blackColor, 10);
            return labelTTF;

and

                var blueColor = cc.color(0, 0, 255);
            var yellowColor = cc.color(255, 255, 0);
            var whiteColor = cc.color(255, 255, 255);
            var blackColor = cc.color(0, 0, 0);
            var fontDefBlueStroke = new cc.FontDefinition();
            fontDefBlueStroke.fontName = fonts.FontTTF;
            fontDefBlueStroke.fontSize = size * 0.5;
            fontDefBlueStroke.fillStyle = whiteColor;
            fontDefBlueStroke.lineWidth = 10;
            // stroke
            fontDefBlueStroke.strokeEnabled = true;
            fontDefBlueStroke.strokeStyle = blackColor;
            
            var labelTTF = new cc.LabelTTF(string, fontDefBlueStroke);
            return labelTTF;