Multiple lines split by Column Series in Line and Clustered column chart

HI, 

I am using Line and Clustered column chart and the columns split just fine based on Channel (as shown in the picture below). 

For the Line values, The problem is I cannot let the graph automarically split Lines based on Column Series (which is channel) just like columns. Is there anyway to achieve it without creating a bunch of measure for each line x channel? it's not optimal.

If I don't do it, this will Sum all channels' value into 1 single line. The measure I am using is: calculate (sum(amount), filter ( tableA, Channel= selectedvalue(channel), Metric = "Detection Rate #"))