Invisible line problem in chart

I have a chart that i want to modify with macros and I have the same problem described here.

http://answers.microsoft.com/en-us/o...9-698861f50f02

Basically, the macro recorder is not doing what the manual action does.

I have 1 trend. It consists of Puple "X" markers with a purple line connecting them. I want to get rid of the line but not the markers. When i macro record this, it gives me the following

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However, when i run this line of code it makes both the line AND the marker invisible. But i only want the line to be invisible.

Any ideas?