# Missing Parameter in Dynamo **URL:** \ **Category:** Revit\ **Tags:** dynamo\ **Created:** [January 31, 2019, 3:26pm UTC](https://forum.dynamobim.com/t/missing-parameter-in-dynamo/31500 "2019-01-31T15:26:08Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![jschneck](https://avatars.discourse-cdn.com/v4/letter/j/8baadc/32.png) [@jschneck](https://forum.dynamobim.com/u/jschneck)\ **Post date:** [January 31, 2019, 3:26pm UTC](https://forum.dynamobim.com/t/missing-parameter-in-dynamo/31500/1 "2019-01-31T15:26:08Z")
I’m writing a script that searches my project for these custom rods I’ve made and places a tag on each ones that has a certain property filled in. I was able to get it to find the hangers but when I looked through the available properties for the ones I wanted they weren’t there. ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/3/b/3b3160aa1d91b0c2fee6a737ce0ebd212f8e644e.png) ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/f/9/f95578e51625e3fc95644a58089e292d3b498b87.png) I’m thinking I need to add one or two more steps involving “element.getparametervaluebyname” but I’m not sure what to put for the string. Any help is welcome. ---
**Author:** ![Marcel\_Rijsmus](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/marcel_rijsmus/32/8539_2.png) [@Marcel\_Rijsmus](https://forum.dynamobim.com/u/Marcel_Rijsmus)\ **Post date:** [January 31, 2019, 3:55pm UTC](https://forum.dynamobim.com/t/missing-parameter-in-dynamo/31500/2 "2019-01-31T15:55:27Z")
are those parameters type or instance? Family or Shared? ---
**Author:** ![jschneck](https://avatars.discourse-cdn.com/v4/letter/j/8baadc/32.png) [@jschneck](https://forum.dynamobim.com/u/jschneck)\ **Post date:** [January 31, 2019, 3:58pm UTC](https://forum.dynamobim.com/t/missing-parameter-in-dynamo/31500/3 "2019-01-31T15:58:32Z")
Shared instance ---
**Author:** ![Marcel\_Rijsmus](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/marcel_rijsmus/32/8539_2.png) [@Marcel\_Rijsmus](https://forum.dynamobim.com/u/Marcel_Rijsmus)\ **Post date:** [January 31, 2019, 4:01pm UTC](https://forum.dynamobim.com/t/missing-parameter-in-dynamo/31500/4 "2019-01-31T16:01:36Z")
In this part of your picture i’m seeing Type Parameter not Instance? ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/3/b/3b59b14715bd7cdd7d0a94d4245f64a093309c57.png) ---
**Author:** ![jschneck](https://avatars.discourse-cdn.com/v4/letter/j/8baadc/32.png) [@jschneck](https://forum.dynamobim.com/u/jschneck)\ **Post date:** [January 31, 2019, 4:03pm UTC](https://forum.dynamobim.com/t/missing-parameter-in-dynamo/31500/5 "2019-01-31T16:03:05Z")
I believe that they are type parameters. Edit: Just to clarify, the ones in the picture are types but the ones I’m looking for are the shared instance. (at least I think so) ---
**Author:** ![Marcel\_Rijsmus](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/marcel_rijsmus/32/8539_2.png) [@Marcel\_Rijsmus](https://forum.dynamobim.com/u/Marcel_Rijsmus)\ **Post date:** [January 31, 2019, 4:03pm UTC](https://forum.dynamobim.com/t/missing-parameter-in-dynamo/31500/6 "2019-01-31T16:03:54Z")
Can you show a bit more of your graph? Important is the first part of your graph ---
**Author:** ![jschneck](https://avatars.discourse-cdn.com/v4/letter/j/8baadc/32.png) [@jschneck](https://forum.dynamobim.com/u/jschneck)\ **Post date:** [January 31, 2019, 4:09pm UTC](https://forum.dynamobim.com/t/missing-parameter-in-dynamo/31500/7 "2019-01-31T16:09:12Z")
![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/0/c/0c5cac5eaf0c720b27ce52a3c3db52535e6154e8.png) ---
**Author:** ![Marcel\_Rijsmus](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/marcel_rijsmus/32/8539_2.png) [@Marcel\_Rijsmus](https://forum.dynamobim.com/u/Marcel_Rijsmus)\ **Post date:** [January 31, 2019, 4:26pm UTC](https://forum.dynamobim.com/t/missing-parameter-in-dynamo/31500/8 "2019-01-31T16:26:31Z")
try filtering by category using By.CategoryAndView And if those hangers are nested families, make sure they are Shared ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/d/d/dd38276423bdac66c234856b3cd41d958d5fa0e0.jpeg) ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/c/7/c79b4d1856e968c5076cea9ab3732bd9aac63fc3.jpeg)