I want to modify a text that is in a block, whitout explode the block. Manually I have found the property that I want to modify but I want to make a program for running it in other drawings. I can pass all the properties of the elements of the block to an array (With blocks), but the problem is that I do not know how I can search for the property textstring = "room type B". The problem is that not all the elements of the array have this property and when I compile the program, the computer gives to me an error. How can I search the elements that have the property textstring to modify it? Thanks, Oscar Barbero Pinacho