void SKU.generar_stock_Sku(Compras_de_Skus cn)

{

  sr  =  SKU  [Secuencia_Secundaria = cn.SKU_Secundario];

    st  =  Stock1  [Origen == cn.ID.toString()];

x_x = Stock1[Status is not  "vendido"  && Numero_de_Serie == cn.SKU_Secundario].count( );

sr.Piezas_compradas_historicamente=x_x;

}

I have a function with an argument (void SKU.generar_stock_Sku(Compras_de_Skus cn))

This function (it is only part of it actually), generates registration within the " Stock1" form.

-Now I want to be able to update records within a third form ( SKU) with a fetch but I can not get it, try something like this:

   sr  =  SKU  [Secuencia_Secundaria = cn.SKU_Secundario];

x_x = Stock1[Status is not  "vendido"  && Numero_de_Serie == cn.SKU_Secundario].count( );

sr.Piezas_compradas_historicamente=x_x;

It has not given results, I have tried several ways but I do not know how to execute the task correctly ... someone to help me complete my code?

I do not know how to use two arguments, since when I do it, I can not register the functions because I can not find them in the drop-down list

thanks, I'm stuck