.AsDouble() returns value in feet

[adkaJK5HX]

Hello!

I wanted to adjust the ceilings in my project, decrease the offset from level by 3 mm. I wrote a simple script in RPS in order to do that quickly. I have checked the storage type of the parameter "Height Offset From Level" and it said "double", so regarding the docs if I would like to set new value I will use .Set(Double). However, when I am checking the current value of the parameter it returns me value in feet. Could someone guide how I should approach it? How to set the parameter by using mm? The project units are in metric system. Thank you!

[jeremy_tammik · Accepted solution]

I am not aware of any method named AsDobule. Please spell check your question, especially its title.

That aside, the internal Revit database unit for lengths is imperial feet: 

• Internal Imperial Units
• Getting Started Creating Families and RFA Files
• Unit Migration Toggle Imperial and Metric Project Unit
• UV, Emergence, Fuzz and the get_ Prefix

To convert to some different unit, please make use of the appropriate methods provided by the Revit API, or simply DIY by multiplying with a suitable factor.

A rather large number of articles in The Building Coder discuss various aspects of unit handling:

• https://thebuildingcoder.typepad.com/blog/units/

[adkaJK5HX]

Edit: Sorry, I posted the topic in a rush. It was just a typo. I will look into the resources you have sent