https://community.graphisoft.com/t5/Collaboration-with-other/SUM-problem/m-p/217530#M27729 Yes. Add "E1" and "Flag" to ID. See my picture.<BR /><IMG src="http://community.graphisoft.com/t5/image/serverpage/image-id/67878iB47BF23B1A74CDBD/image-size/large?v=v2&amp;px=999" border="0" alt="Popis_SUM po ID.jpg" title="Popis_SUM po ID.jpg" /> Wed, 25 Jan 2012 11:26:53 GMT Anonymous 2012-01-25T11:26:53Z https://community.graphisoft.com/t5/Collaboration-with-other/SUM-problem/m-p/217529#M27728 <DIV class="actalk-migrated-content"><T>Is it possible to get the SUM for each ID "stack" separately instead of the SUM at the bottom? I would like to have 4 individual sums in this case. It's for calculating area of exterior walls regarding to different sky orientations.</T></DIV><BR /><IMG src="https://community.graphisoft.com/t5/image/serverpage/image-id/13122i7A885C075465A2E0/image-size/large?v=v2&amp;px=999" border="0" alt="Clipboard01.jpg" title="Clipboard01.jpg" /> Wed, 25 Jan 2012 11:07:06 GMT https://community.graphisoft.com/t5/Collaboration-with-other/SUM-problem/m-p/217529#M27728 Anonymous 2012-01-25T11:07:06Z https://community.graphisoft.com/t5/Collaboration-with-other/SUM-problem/m-p/217530#M27729 Yes. Add "E1" and "Flag" to ID. See my picture.<BR /><IMG src="http://community.graphisoft.com/t5/image/serverpage/image-id/67878iB47BF23B1A74CDBD/image-size/large?v=v2&amp;px=999" border="0" alt="Popis_SUM po ID.jpg" title="Popis_SUM po ID.jpg" /> Wed, 25 Jan 2012 11:26:53 GMT https://community.graphisoft.com/t5/Collaboration-with-other/SUM-problem/m-p/217530#M27729 Anonymous 2012-01-25T11:26:53Z https://community.graphisoft.com/t5/Collaboration-with-other/SUM-problem/m-p/217531#M27730 Super! Hvala <E><span class="lia-unicode-emoji" title=":winking_face:">😉</span></E> Wed, 25 Jan 2012 11:32:20 GMT https://community.graphisoft.com/t5/Collaboration-with-other/SUM-problem/m-p/217531#M27730 Anonymous 2012-01-25T11:32:20Z https://community.graphisoft.com/t5/Collaboration-with-other/SUM-problem/m-p/217532#M27731 <BLOCKQUOTE>andro55 wrote:<BR />Yes. Add "E1" and "Flag" to ID. See my picture.</BLOCKQUOTE> That "E" in "E1" is actually a mathematical SUM sign (the Greek capital Sigma letter). When there is a "1" after it, it will sum the number of items, if there is no "1' behind it, it will sum the values of those items listed in that column. Tue, 31 Jan 2012 11:35:26 GMT https://community.graphisoft.com/t5/Collaboration-with-other/SUM-problem/m-p/217532#M27731 Laszlo Nagy 2012-01-31T11:35:26Z