Hi Tino and Zopist, Maybe me example was not the best. I will try to expose a better example: (The real case is too complicated to expose here.) Suppose: "OrderHeader" is a insert ZSQL method: insert into OrderHeader order_num,paymethod,client_num,client_name,client_address,... (over 40 columns) values (<dtml-sqlvar order_num type=string>, copy the column "order_num" in a variable <dtml-in "getPaymethods(code='TR')"> <dtml-sqlvar paymethod type=string>, copy the column "paymethod" in a variable ... </dtml-in> <dtml-in getClient(client_num='SD4998')"> <dtml-sqlvar client_num type=string>, copy the column "client_num" <dtml-sqlvar client_name type=string>, copy the column "Client_name" ... </dtml-in> ...) Each column to insert is obtained by a diferent ZSQL methods, REQUEST variable or External Method. ---- "OrderLine" is a insert ZSQL method: insert into OrderLine (order_num,paymethod,client_num,client_name,client_address,...,product_num,. .. (over 40 columns)) values (insert the column "order_num" from the variable, insert the column "client_num" from the variable, insert the column "client_name" from the variable, insert the column "client_address" from the variable, ..., <dtml-sqlvar product_num type=string>, ...) ---- Registering the order lines... <dtml-call "OrderHeader(order_num='OR4567')"> <dtml-call "OrderLine(product_num='PENCIL-0067')"> <dtml-call "OrderLine(product_num='PEN-BLUE-8')"> <dtml-call "OrderLine(product_num='PENCIL-0045')"> <dtml-call "OrderLine(product_num='PENCIL-0023')"> <dtml-call "OrderLine(product_num='PEN-BLCK-1')"> <dtml-call "OrderLine(product_num='PEN-031')"> ---- I don't like to put: <dtml-call "getOrderHeader(order_num='OR4567')"> after the line <dtml-call "OrderHeader... because I think its superfluous as I processed all the columns in a previous method. Storing each column in a REQUEST variable its a mess, I have a lot of REQUEST variables and the variable name of them can match some column names, so I can't mix the variables. The best solution were a python dictionary type variable, or variables in a diferent namespace,... Any Ideas? Juan Carlos Coruña.