ORACLE "Returning ... Into" with SQLCommandMBS

I need the ID of the record I just entered

version: ORACLE 11g

I created the T1 table with 2 columns:
C1 number (value automatically generated by insert command with trigger and sequence)
C2 char(1)
//

my code:

var con as SQLConnectionMBS = …
var sql as string = “INSERT INTO T1 VALUES (‘A’) RETURNING C1 INTO :Id”
var cmd As New SQLCommandMBS (con,sql)

var RetId As Integer = cmd.Param(“Id”).asInteger
cmd.Execute

the result is:
RetId = 0
Id = Nil

nothing changes before or after cmd.Commit

I also tried:
cmd.Execute
var RetId As Integer = cmd.Param(“Id”).asInteger
but again nothing changes

Can @Christian_Schmitz help with this?

thank you.

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