How to only show DOT without LINE in Line plot?

[#1]

I am creating a a line plot. In the display options for item, I deselect line and select Symbol. I wish the chart will only show data point in symbol without line between data points. However, the line still showup. Only when a part of X-axis selected, the line disappear and only dot showup. Please see the attached two plots. The 2nd plot in the file is what I expect. Thank for any clue in advance!

Xianqun

[PabloOrtiz]

Hi, you have to select a line chart

and then select these options

[#3]

Pablo, thank for your response. I did exactly same as what your showed in your example, bu the line still showup. Not sure why. Xianqun

[PabloOrtiz]

Hi, upload de .qvw to see the problem