How do I Create a Trend Line in a Combo Chart or Bar Chart?

[BrianDH]

I have a chart (Dim = V_ENTERED_DT) (Mes = V_GROSS_AMT) (Alt-Mes =  linest_m(total aggr(if(sum(V_GROSS_AMT),sum(V_GROSS_AMT)),V_ENTERED_DT),V_ENTERED_DT)*  only({1}V_ENTERED_DT)+linest_b(total aggr(if(sum(V_GROSS_AMT),sum(V_GROSS_AMT)),V_ENTERED_DT),V_ENTERED_DT))

Secondary axis set to line.

I get no errors, i also get no lines.   Not sure where to go from here.

[BrianDH · Accepted solution]

Solved:  First create a Line Chart, then after you see your trend line convert to a Combo Chart

https://youtu.be/dBrKlORa1Tc