Proficy Historian - applying groups to Line Chart

Hi,

I started to use Proficy Historian and now I am trying to add Chart Group Files to Line Chart from button but without success.

I used the same code as for standard chart.

On my button for standard chart I had this code:

OpenPicture "History.grf", "", "", ""
CGW_ApplyFileToChart "C:\HMI\DUT\HTR\St1.csv", "MyChart"

Now I just renamed chart name to "LineChart1"

OpenPicture "History.grf", "", "", ""
CGW_ApplyFileToChart "C:\HMI\DUT\HTR\St1.csv", "LineChart1"


Is there any way to achieve this?

Thanks,
M.