Need to get the values ​​that are between this date

[#1]

Hello

I need to get the values ​​that are between this date

=sum( {$<FECHA_CALENDARIO = {'>=$(=Date(Pstartdate))<=$(=Date(Penddate))'}>} Costo_de_Venta)

so for example

=( {$<FECHA_CALENDARIO = {'>=$(=Date(Pstartdate))<=$(=Date(Penddate))'}>} Costo_de_Venta)

  helpme please

I not need sum, I need the real value

[#2 · Accepted solution]

replace sum by only