Visual Basic.NET - Ayuda consulta mysql-vb.net con parametros o variables

set @total:=0;

set @acum:=0;

select mov_comprobante,mov_descripcion,mov_debe, mov_haber,@acum:=(select sum(mov_debe - mov_haber) as Anterior from Movimiento_contable where org_rut="123456" and cen_codigo="12345" and mov_fecha between '2021-01-01' and  '2021-05-31')

as SaldoAnterior ,@total:=mov_debe- mov_haber +@total + @acum as Saldo

from movimiento_contable where org_rut="123456" and cen_codigo="12345" and mov_fecha between '2021-06-01' and  '2021-06-30'

y desde VB.net es:

Sql = "SELECT mov_descripcion, mov_fecha, mov_tipo, mov_comprobante, mov_documento, mov_numero, mov_glosa, mov_debe, mov_haber, " & _

           "@acum=(select sum(mov_debe - mov_haber) as Anterior from Movimiento_contable where org_rut="123456" and cen_codigo="12345" and mov_fecha between '2021-01-01' and  '2021-05-31')

as SaldoAnterior , " & _

"(@total1 = @total1 + mov_debe - mov_haber+@acum) as saldo" & _

            "FROM movimiento_contable " & _

            " where ORG_RUT= '" & "123456" & "' and cen_codigo= '" & "12345" & "' and mov_fecha between  '2021-06-01' and  '2021-06-30' order by mov_fecha asc"

 Dim llenar As New DataTable

 Dim cmd As New MySqlCommand(Sql, Conexion)

 cmd.Parameters.AddWithValue("@total", 0)

  cmd.Parameters.AddWithValue("@acum", 0)

Dim data As New MySqlDataAdapter(cmd)

data.Fill(llenar)