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Bit odd yes tested in Bricscad, I will look at the getcellextents, this gives the XY position of the corners of the table cell. If the line is 69 times repeated it sounds like that is the problem. I will make a little test program so can look at what is going on when calculating the Pt1 and Pt2. the code is done that way so if row height is changed for other users the lines are still central in the cell. Add the (princ line and look at the Y value displayed, it should change for every row. Please let me know if it is not changing. (setq pt2 (list (nth 6 pts)(nth 7 pts) 0.0)) (princ (strcat "\n" (rtos (cadr pt1) 2 3) " ")) (setq vdist (/ (- (cadr pt1) (cadr pt2)) 2.0)) Another test could some one try on Acad. 0 is 1st column. (setq objtable (vlax-ename->vla-object (car (entsel "\nPick a table ")))) ; put a number like 3+ in row variable ; then copy this line to command line change the 3 etc to 4 5 6 and so on ; The Y value should change (setq pts (vlax-safearray->list (vlax-variant-value (VLA-GETCELLEXTENTS objtable 3 0 :vlax-false))))

Not sure if this will work the way you want. I created a dummy drawing with a dummy block and a dummy attribute. When you set the attribute to Invisible, you can't see it any more, but you can edit it. I know, that's not what you want. I include it so you don't waste time trying it for yourself. When you set the attribute to Constant, you can't edit it at all. It no longer shows up in the Properties, and it doesn't show up in the block. If you change the attribute back to not constant, you can insert a new block and give it a different value, but it's still invisible and it does show up in Properties. Could be a bug? Or the way I handled it.