When you run the script, look at the results of the dimension create node (like shown below). If it shows a list of dimensions, then the script is creating the dimensions, but you just can’t see them in the view. If you click on the id of one of the dimensions (highlighted in green), it will probably say that “no good view could be found”. The cause is usually the references you are dimensioning to are not co-planer with the view (which more than likely is the piping references). There are several posts within the forum that talk about this issue. One is link below.
