Tooltip is getting auto hidden

When i hover over shapes or links or any object, even if i don’t move the mouse tooltip gets hidden, after some time, i want to change this behavior.

code link for tooltip template: Untitled file — Codefile.

this is how im using in shape

That behavior is controlled by the ToolManager.toolTipDuration property. It and the other related tooltip time property are mentioned in GoJS Tooltips -- Northwoods Software