Thank you for your reply,

The method you have used in the jpeg is a major step in the right direction, but the problem with dynamic number of length inputs remain. In the example you have used the random length node in which you can select the number of inputs you desire. Is there a node where you can select how many inputs you want to have first, then giving them value and finally feeding them in the X value of the "Vector3DbyX" node?

- I tried using the "Multi Length Input" node but it has fixed number of inputs (can't have more than 5 inputs)
- The "List fill Length delta" node seems to divide, based on X times, the total length in a equal values

Splendid, this command works as a charm.
Otherwise the first time I use the grid node is just to create points in the Y axis (its much easier as it combines several inputs), so they won't be that many, between 1-10, I would guess. Unfortunately, there is no pattern when it comes to moving them, so they have to be moved individually.

On the topic with issues, is there a known bug when feeding multiple 3D points into the placement point of "RectangleGridPoints" node (see "Multiple grids.jpeg")? It seems to stop the script from running. I tried also connecting it to 2x 3Dpoint input nodes - in case the "blue points" are now readable as objects instead of 3D points, but i get the same result. Also tried using the move command on the Grid to those points, (in a way to copy it to each point) but the script crashes. My apologies, for going off the main topic.

The whole script that I am doing is tiling by object command. The place I'm stuck at is where you select the number of unique rows and their offset. For example I have a row of an object. Then the upper row is moved by A distance in the X axis, then the next with B distance in the X axis. So now I have a total of 3 unique rows, which will be copied in the Y direction, filling the selected area. I have created non-dynamic script (that runs on exactly 4 rows) which you can see in the "Tile by object.jpg", with its inputs and test run.

Edit: For anyone having the same problem, I worked around the bug with the feeding multiple points to the grid node, by using the "CopyAlong" node on the first grid. The script becomes a bit slower but still works.

Dobromir