Can't connect ports

i am connecting two tables.But I am not ABLE TO CONNECTING TWO COLUMNS.i don’t think what’s the problem port is not working properly or any other problem.
template is like this:
name: “SCROLLING”,
desiredSize: new go.Size(150, 150),
goJs(go.Panel, “TableRow”,
defaultStretch: go.GraphObject.Horizontal,
fromSpot: go.Spot.LeftRightSides, toSpot: go.Spot.LeftRightSides,
toLinkable: true, fromLinkable: true,
new go.Binding(“portId”, “LOGICALCOLUMNNAME”),
goJs(“CheckBox”, “checked”, { column: 0,width:15 },
{ “_doClick”: function (e, obj) { Ciel.Process.ProcessDesign.JoinStep.UpdatedColumnInTable(e, obj); } },
new go.Binding(“checked”, “checked”).makeTwoWay()),
goJs(go.TextBlock, { column: 1 }, new go.Binding(“text”, “LOGICALCOLUMNNAME”))
I am using scrolling table concept

Users can draw new links in this sample: Scrolling Table

However, I do notice that scrolling is not updating the link routes any more. We’ll fix that for the next release.

I used same concept as scrolling table.But i am not able to draw links.

You have not provided any information so that we can guess what is wrong in your app. I suggest that you read GoJS Ports in Nodes-- Northwoods Software and GoJS Validation -- Northwoods Software carefully to see if perhaps you forgot something.