question

1. I don't know. I asked this as a follow-up under this post.

2. The available parameters differ slightly between object.copy() and createcopy() (use ctrl-f to find the command). But "object.copy(dest)" and "createcopy(object, dest, 1)" should give the same result.

3. Once the query of the Calculated Table is defined it doesn't need any pointer references to other nodes to function, so you could simply copy it into the model like the stats collector.

// Check if calculated table is present in the model
treenode calcTables = Model.find("Tools").subnodes.assert("CalculatedTables");
Object table = calcTables.find("MyCalcTable");
if(!objectexists(table))
{
    // Copy the table into the model
    table = current.subnodes["MyCalcTable"].copy(calcTables);
}

milestone_lib_test_2.fsl

For the table to be shown in the query builder interface, you would need to add a coupling node to the respective table (yellow, under "tables" variable node) and link to that node in any expressions (pink).