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<?xml-stylesheet type="text/xsl" href="https://community.appian.com/cfs-file/__key/system/syndication/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:wfw="http://wellformedweb.org/CommentAPI/"><channel><title>Has the index() function changed recently?</title><link>https://community.appian.com/discussions/f/rules/19895/has-the-index-function-changed-recently</link><description>I have used the index function reliably over the years to pull multiple items from an array (in particular using index(wherecontains()) however I&amp;#39;m now seeing a very odd behavior and I wanted to know if something has changed. In the epxression below I</description><dc:language>en-US</dc:language><generator>Telligent Community 12</generator><item><title>RE: Has the index() function changed recently?</title><link>https://community.appian.com/thread/77733?ContentTypeID=1</link><pubDate>Tue, 10 Nov 2020 02:47:01 GMT</pubDate><guid isPermaLink="false">d3a83456-d57b-489c-a84c-4e8267bb592a:0fd8612b-cadb-4549-84cc-25e41ddfde69</guid><dc:creator>Carlos Santander</dc:creator><description>&lt;p&gt;It seems like&amp;nbsp;this behavior (caused by some sort of memory corruption, maybe?) is triggered by the empty dictionary. In your first example, you can replace &lt;code&gt;{}&lt;/code&gt; with &lt;code&gt;null&lt;/code&gt; or &lt;code&gt;{PK:null}&lt;/code&gt; and get your expected result.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>