Widget reference isn't valid error

Development Programming & Scripting
1

Hello
I’m currently having an error “Blueprint Runtime Error: “Accessed None trying to read property CallFunc_Create_ReturnValue”. Node: Add to Viewport Graph: EventGraph Function: Execute Ubergraph X Line Generator Blueprint: X_Line_generator” based on the blueprint shown in the image below.

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As the viewport and remove from parent are connected to the create widget return value, the code runs without error but after a couple of cycles or a set period of time, I receive the error stating the create widget return value is no longer valid.
Any help would be appreciated.

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2

Create references and use them. You can’t rely on Cast / Create nodes to store it forever. You’ll also reduce spaghetti code this way.

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Same with widgets:

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When it comes to the Branch Delay Twisty Thingamabob, consider Timers:

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More versatile, come with features and much easier to debug when things go haywire.

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3

Thank you for the help, I tried setting the references as variables and it worked. I am quite new to Unreal Engine so I didn’t think about this method, I will try to change my delay sections like you have here and see how it affects my programme.
Thank you again

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