Locate text above horizontal line

Hi, i have a horizontal line that follows a changing stoploss. I would like to include text that will appear above the right hand end of the line, and remain a constant distance above it when the line is redrawn. I am confused about the xPos and yPos parameters. Here is the code that I am using.

1 ChartObjects.DrawHorizontalLine("LongTargetLine", _longtarget, Colors.Lime, 1, LineStyle.Lines);

2 ChartObjects.DrawText("LongText", "Long Target", xPos, yPos, vAlign, hAlign, Colors.Lime);

I'm assuming that the yPos should follow the _longtarget parameter, but I can't figure ot the xPos part. No issues with vAlign and hAlign.

Can anybody help, please ...

Thanks.