{"id":3357,"date":"2022-05-21T11:04:34","date_gmt":"2022-05-21T09:04:34","guid":{"rendered":"https:\/\/store.algosyntax.com\/?post_type=asx-lms-tutorial-cpt&p=3357"},"modified":"2026-03-09T13:52:47","modified_gmt":"2026-03-09T11:52:47","slug":"why-your-adddynamic-delegate-is-not-working","status":"publish","type":"asx-lms-tutorial-cpt","link":"https:\/\/store.algosyntax.com\/tutorials\/unreal-engine\/why-your-adddynamic-delegate-is-not-working\/","title":{"rendered":"Unreal AddDynamic() Delegate Is Not Working"},"content":{"rendered":"\t\t
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There are multiple reasons why a function that was bound using AddDynamic()<\/a> may not get called or appear not to work in Unreal Engine C++. This Tutorial will cover some of those scenarios and how to solve them.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Common Developer Mistakes<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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  1. You are not getting Delegates by reference<\/strong> before you call AddDynamic<\/strong> On Them. You should almost always <\/strong>get a reference to the delegate, not a copy. Example of how NOT<\/strong> to do it:

    FDelegateName theDelegate= getDelegateFunction();<\/p>

    This is wrong and you will get a copy instead of the delegate you want to bind to. Instead, use:

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    FDelegateName&<\/strong> theDelegate= getDelegateFunction();

    <\/p>

    Emphasis on the ampersand sign( get by reference).

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  2. The delegate is not getting Broadcast anywhere in the code. If Delegate->Broadcast is not getting called anywhere in the code, that means listeners(functions) will never get triggered. Sometimes this may be your error if its a custom delegate or a bug within the engine itself if its an engine delegate. The delegate may not have ever been called.

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  3. Garbage Collection. Check if your delegate owners or broadcasters are not getting deleted on invalidated by the garbage collector. Ensure you have protected\/or added them for reference counting by using UPROPERTY where appropriate.<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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    \n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tJoin Us On Discord<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"featured_media":0,"template":"","asx-lms-tutorial-categories":[58,45],"asx-lms-tutorial-tags":[46],"class_list":["post-3357","asx-lms-tutorial-cpt","type-asx-lms-tutorial-cpt","status-publish","hentry","asx-lms-tutorial-categories-unreal-c-api","asx-lms-tutorial-categories-unreal-engine","asx-lms-tutorial-tags-cpp","entry"],"acf":[],"_links":{"self":[{"href":"https:\/\/store.algosyntax.com\/asx-rest\/wp\/v2\/asx-lms-tutorial-cpt\/3357","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/store.algosyntax.com\/asx-rest\/wp\/v2\/asx-lms-tutorial-cpt"}],"about":[{"href":"https:\/\/store.algosyntax.com\/asx-rest\/wp\/v2\/types\/asx-lms-tutorial-cpt"}],"version-history":[{"count":0,"href":"https:\/\/store.algosyntax.com\/asx-rest\/wp\/v2\/asx-lms-tutorial-cpt\/3357\/revisions"}],"wp:attachment":[{"href":"https:\/\/store.algosyntax.com\/asx-rest\/wp\/v2\/media?parent=3357"}],"wp:term":[{"taxonomy":"asx-lms-tutorial-categories","embeddable":true,"href":"https:\/\/store.algosyntax.com\/asx-rest\/wp\/v2\/asx-lms-tutorial-categories?post=3357"},{"taxonomy":"asx-lms-tutorial-tags","embeddable":true,"href":"https:\/\/store.algosyntax.com\/asx-rest\/wp\/v2\/asx-lms-tutorial-tags?post=3357"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}