Sample Time issue?

hi everyone,

I use this function (on a widget)

var N = It.getNewestSampleTime(), O = It.getOldestSampleTime();
			if(N!=null&&O!=null){//Sys.println(N.value()+"/"+O.value());
				var text = (N.value()-O.value())/3600.0; text = "-"+Math.round(text).toNumber()+"h";
				dc.drawText(x, gH*0.76, 0, text, 2);
			}

for a "generic" graph function.

on HR no issue, I get 3h,

but on Stress and Body Battery I always get 459518h or huge number > 450000

Does anyone else experince this?

Have I missed something?!