Hi @agonsales ,
Do you want to get the string a fighter jet flying through a blue sky from string {"text":"a fighter jet flying through a blue sky"}?
If yes, you could refer to my screenhsot below to extract the string:

The expression in the Compose as below:
first(split(last(split(variables('string1'),'"text":"')),'"}'))
The flow would run successfully as below:

Please let me know if your problem could be solved.
Best regards,
Alice
Community Support Team _ Alice Zhang
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