How to create double aggregation on timechart?

[mxh7777]

Hi,

I got a table data with 3 fields (Time, Method, Return)

Time	Method	Return
28/10/2022	Method 1	KO
28/10/2022	Method 2	KO
28/10/2022	Method 1	OK
28/10/2022	Method 1	OK
28/10/2022	Method 1	OK
28/10/2022	Method 1	OK

...	...	...
29/10/2022	Method 2	OK
29/10/2022	Method 2	OK
29/10/2022	Method 2	OK
29/10/2022	Method 2	OK
29/10/2022	Method 2	OK
29/10/2022	Method 2	OK
29/10/2022	Method 2	OK

I'd like to make a timechart with double agregation (one per Method, then one per Return) to get this kind of chart

The only thing I can do for the moment is this chart with this request

| timechart count(eval(Return="KO")) as KO count(eval(Return="OK")) as OK by Method

Do you know how I can get the first timechart ?

Thanks