connection string in dev and production

I have a several servers that i want to pull data from.

I put the connection string in a OBJECT variable that come from configuration table and use it in the for loop mapping the value to local variable called connectionstring, this variable is the expression for the connection string property.

So far everything is working as expected.

my problem is that on my development i put my local server in the connection string variable so i will be able to connect to the server so i will be able to map source to destination.

When i deploy the solution to production the data in the configuration table is different obviously but i get a connection error that saying that it try to connect to my dev server.

Any idea why?

Thanks.