Tree view in main grid

Dear Christopher, When implementing this solution both the Form preview and the main grid displayed blank. I expect that this is because the startConditionProviderParam is empty. When the grid is appended to a Part item, it can use this Part item as its context and starting point. In my case however I'll have to provide a condition along the lines of "where [part].[is_top] = '1'". I had configured this in the Query Definition as "[is_top] = 1" but this doesn't seem to suffice. I guess the question here is this: How can we tell our Tree Grid View what its starting condition/query (where [part].[is_top] = '1') should be? Edit: I tried a different approach. Instead of creating the Tree Grid View for a Relationship Grid, I let set Tree Grid View Usage to JavaScript Method. This gave me a chunk of code which I then placed in the HTML element on the Form. This almost worked. When saving the Form or selecting the dummy itemtype from the TOC it now creates a pop-up with the Tree Grid View (with content as desired). I suspect the last problem to be in this piece of code: topWindow.ArasModules.MaximazableDialog.show('iframe', dialogParameters).promise.then(function() { delete topWindow.CustomStartConditionProvider; delete topWindow.CustomParametersProvider; } For now it points to a dialog box where it should just point to the main grid. So... How do we go about doing that?   To give you a little bit more insight in the use case, I work for an engineering bureau that uses the Systems Engineering methodology to engineer the electrical installation and software for large infrastructural objects. As such, our hardware and software engineers are used to thinking in System Breakdown Structures (or SBS). This means that when they want to work on a specific document they find it easier to browse through the SBS to find it rather than search for it in the Document grid. I have some more ideas to incorporate in this particular view and later to automate some steps that are currently being executed by users manually, but first things first. My job basically is to make life easier for everyone in the company using ARAS and to make sure we keep up with the latest developments.