Having trouble with extracting part of a string

[samuelstevenson]

Hi all,

I'm trying to extract part of a string that exists between square brackets [ ]. My function attempt is failing. Can someone help?

substring(triggerBody()?['title'],indexOf('[',triggerBody()?['title']),sub(indexOf(']',triggerBody()?['title']),indexOf('[',triggerBody()?['title'])))

Thanks!

[v-yuazh-msft · Accepted solution]

Hi @samuelstevenson,

Could you please share more details about the string that you mentioned and want to extract part of a string from?

Do you have a String such as [1234], and you want to get the 1234 in the string inside the []?

If yes, please refer to screenshot below to create the flow:

The expresion in the Condition 2 as below:

first(split(last(split(string(outputs('Compose')),'[')),']'))

The flow would run successfully as below:

Best regards,

Alice

[samuelstevenson]

Hi Alice,

Thanks! This worked.

If you wouldn't mind, could you please explain why:

1. My solution didn't work
2. Your solution does?

Trying to learn from my mistakes. 🙂

Thanks.