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Power Automate - Building Flows
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HTTP Post keeps adding a \ where a "

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Posted on by 32

I've spent all evening searching for the answer on this one... please help.

 

I add this into a compose action:

[{"Group":2512276,"TimeSlot":"0"},{"Group":2517214,"TimeSlot":1"},{"Group":2513377,"TimeSlot":"3"}]

When the flow is ran, the body section of my HTTP post action, where the compose is inserted shows:

{
 "Name": "AA - 12220573_637004232000000000CG",
 "CustomerRef": 45345,
 "SiteID": 2243,
 "Access": "[{\"Group\":2512276,\"TimeSlot\":\"0\"},{\"Group\":2517214,\"TimeSlot\":1\"},{\"Group\":2513377,\"TimeSlot\":\"3\"}]"
}

 

See the screenshot below. How do I stop Flow from adding the \ to my post body?

 

 

 

  • Verified answer
    yashag2255 Profile Picture
    24,442 Super User 2024 Season 1 on at
    Re: HTTP Post keeps adding a \ where a "

    Hey @MrRK 

     

    You can go the variable way too. All you have to do is to intialize an array variable and keep appending the objects in that using the append to array variable action. 

     

    Hope thsi Helps!

     

    If this reply has answered your question or solved your issue, please mark this question as answered. Answered questions helps users in the future who may have the same issue or question quickly find a resolution via search. If you liked my response, please consider giving it a thumbs up. THANKS!

  • MrRK Profile Picture
    32 on at
    Re: HTTP Post keeps adding a \ where a "

    Awesome...

     

    Ideally I'm trying to append to the Variable (String) based on various actions, and so Compose won't work for me.

     

    What is the correct way?

  • yashag2255 Profile Picture
    24,442 Super User 2024 Season 1 on at
    Re: HTTP Post keeps adding a \ where a "

    Hey @MrRK 

     

    You got it there-> "However, try initialising a variable, and setting the same values inside of a string. Then bring that into a http post in the same way, and it gets incorrectly formatted.The moment you add it as a string it will read it as one and add those extra characters to send a serialized body to the API call. 

     

    Hope this Helps!

     

    If this reply has answered your question or solved your issue, please mark this question as answered. Answered questions helps users in the future who may have the same issue or question quickly find a resolution via search. If you liked my response, please consider giving it a thumbs up. THANKS!

  • MrRK Profile Picture
    32 on at
    Re: HTTP Post keeps adding a \ where a "

    You are correct, when the data is manually entered into a compose action, and then added to the HTTP Post, it works fine.

     

    However, try initialising a variable, and setting the same values inside of a string. Then bring that into a http post in the same way, and it gets incorrectly formatted. I've tried everything to stop it happening and nothing works!

  • v-bacao-msft Profile Picture
    on at
    Re: HTTP Post keeps adding a \ where a "

     

    Hi @MrRK ,

     

    I think the advice provided by yashag2255 is correct. You could use the variable of the corresponding type to store the property value, such as an object or array variable. Please take a try.

     

    Best Regards,

  • yashag2255 Profile Picture
    24,442 Super User 2024 Season 1 on at
    Re: HTTP Post keeps adding a \ where a "

    Hey @MrRK 

     

    For some reason that compose action is getting the input as string and that string is later being serialised in the HTTP action. I tried this by manually creating an array and typing the values in and it worked just fine.ww2.PNG

     

    ww3.PNG

     

    Hope this Helps!

    If this reply has answered your question or solved your issue, please mark this question as answered. Answered questions helps users in the future who may have the same issue or question quickly find a resolution via search. If you liked my response, please consider giving it a thumbs up. THANKS!

  • abm abm Profile Picture
    32,472 Most Valuable Professional on at
    Re: HTTP Post keeps adding a \ where a "

    Hi @MrRK 

     

    Looks like your output of compose is fine. It is not adding the '/' character. How do you mapping the body of http? I can see there are other elements in the body such as Name, CustomerRef, SiteID. Could you please show a screenshot of this?

     

    Thanks

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