Kibana Canvas expression

Elastic Stack Kibana
1

Hi, please, I have 2 questions:

  1. what is the difference between
filters

and

selectFilter

In Kibana 8.4 seems like filter is not working anymore:

and question no2:

Can I have two occurances of selectFilter within one expression?
like this?

kibana 
|selectFilter  group="by-device" group="by-date1" ungrouped=false
| essql query= "SELECT Round(AVG(\"P1-C01-Temp\"),2) as P1C01_T, 
                       Round(AVG(\"P1-C02-Temp\"),2) as P1C02_T, 
                       Round(AVG(\"P1-C03-Temp\"),2) as P1C03_T, 
                       Round(AVG(\"P1-C04-Temp\"),2) as P1C04_T,
                       Round(STDDEV_POP(\"P1-C01-Temp\"),2) as P1C01_STD,
                       Round(STDDEV_POP(\"P1-C02-Temp\"),2) as P1C02_STD,
                       Round(STDDEV_POP(\"P1-C03-Temp\"),2) as P1C03_STD,
                       Round(STDDEV_POP(\"P1-C04-Temp\"),2) as P1C04_STD
                       FROM \"metrics-factory*\" WHERE \"prodTimeSpan\"=0"
| var_set name="a01" value={getCell "P1C01_T"}
| var_set name="a02" value={getCell "P1C02_T"}
| var_set name="a03" value={getCell "P1C03_T"}
 var_set name="a04" value={getCell "P1C04_T"}
 var_set name="s01" value={getCell "P1C01_STD"}
| var_set name="s02" value={getCell "P1C02_STD"}
| var_set name="s03" value={getCell "P1C03_STD"}
| var_set name="s04" value={getCell "P1C04_STD"}
|selectFilter  group="by-device" group="by-date2" ungrouped=false
|essql query= "SELECT Round(AVG(\"P1-C01-Temp\"),2) as P1C01_T, 
                       Round(AVG(\"P1-C02-Temp\"),2) as P1C02_T, 
                       Round(AVG(\"P1-C03-Temp\"),2) as P1C03_T, 
                       Round(AVG(\"P1-C04-Temp\"),2) as P1C04_T,
                       Round(STDDEV_POP(\"P1-C01-Temp\"),2) as P1C01_STD,
                       Round(STDDEV_POP(\"P1-C02-Temp\"),2) as P1C02_STD,
                       Round(STDDEV_POP(\"P1-C03-Temp\"),2) as P1C03_STD,
                       Round(STDDEV_POP(\"P1-C04-Temp\"),2) as P1C04_STD
                       FROM \"metrics-factory*\" WHERE \"prodTimeSpan\"=0"
| var_set name="a201" value={getCell "P1C01_T"}
| var_set name="s201" value={getCell "P1C01_STD"}
| markdown "|   AVG1     |   STD1     | 
|-------------|-------------|
| " {var "a01"} " | "  {var "s01"} "   | 
| " {var "a02"} " | "  {var "s02"} "    | 
| " {var "a03"} " | "  {var "s03"} "  |  
 " {var "a04"} " | "  {var "s04"} "  | 
  " {var "a201"} " | "  {var "s201"} "  |"                  
| render
2

I cant figure this out too and also none of the options work in 8.4!