https://communities.bentley.com/products/products_generativecomponents/f/generativecomponents---forum/167535/how-to-make-cull-patternI have list of objects and I have another list of true false. I wanna make list of all objects are true like this. List1:(Curve 1,Curve 2 ,Curve 3 ) Pattern list:(True,False,True) Expected result: (Curve1,Curve3) how can I make this functionen-USTelligent Community 12https://communities.bentley.com/thread/479880?ContentTypeID=1Wed, 05 Sep 2018 16:31:24 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:4e531e58-f445-47f4-8482-5a60292fd234ehsan mokhtari<p>thanks alot</p><div style="clear:both;"></div>https://communities.bentley.com/thread/479827?ContentTypeID=1Wed, 05 Sep 2018 12:12:23 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:76873637-4780-4aab-bd30-7f56c3ed6caaRobert Jones<p>You could&nbsp;write your own custom function and use it in a function node:</p> <p>Something like this should work:</p> <div class="mainbody"> <div class="body conbody"> <pre class="pre codeblock">object [] MaskedList(object [] InList, bool [] Mask)<br />{<br /> object OutList = {};<br /> int c = 0;<br /> for (int i = 0; i &lt; InList.Count; ++i)<br /> {<br /> if (Mask[i] == true)<br /> {<br /> OutList[c] = InList[i];<br /> ++c;<br /> }<br /> }<br /> return OutList;<br />}</pre> </div> </div><div style="clear:both;"></div>