Error: Button with Selector not Found

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Posted on by apaulso9

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Hello all,

I have a UI element for a button that looks like this:

> frameset > frame[src="/epitomax/episode/Admission.jsp?episode_id=%EpisodeID%&case_no=100578&episode_type=admission&extra_arg=null"] > html > frameset > frame[src="/epitomax/episode/AllForms.jsp?episode_id=%EpisodeID%&MAX_ROWS_OVERRIDE=FALSE&ALLFORM_DEFAULT_FORM_TYPE_FILTER='PROGRESS NOTE'"] button[Id="btnAll"]

When I test the selector by typing in the variable %EpisodeID% it works and can find the selector. However, during the actual flow I parse the variable out and it fills in. This always fails. The output is correct as I can see in the error message that the correct episode id is selected.

Error Messsage

Correlation Id: 3107f6da-e341-41d6-8330-273f6de7f6b3

Microsoft.PowerPlatform.PowerAutomate.Desktop.Actions.SDK.ActionException: Button with selector '> frameset > frame[src="/epitomax/episode/Admission.jsp?episode_id=12345
&case_no=100578&episode_type=admission&extra_arg=null"] > html > frameset > frame[src="/epitomax/episode/AllForms.jsp?episode_id=12345
&MAX_ROWS_OVERRIDE=FALSE&ALLFORM_DEFAULT_FORM_TYPE_FILTER='PROGRESS NOTE'"] button[Id="btnAll"]' not found.
at Microsoft.Flow.RPA.Desktop.Modules.WebAutomation.Actions.PressButtonBase.Execute(ActionContext context)
at Microsoft.Flow.RPA.Desktop.Robin.Engine.Execution.ActionRunner.Run(IActionStatement statement, Dictionary`2 inputArguments, Dictionary`2 outputArguments)

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Power Automate Desktop

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Nived_Nambiar 18,138 Super User 2026 Season 1 on at

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Hi @apaulso9

seems like this kind of question has been discussed earlier in community.

I think you need to enable Text Editor option

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Nived N 🚀

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apaulso9 200 on at

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Hi,

I already have. That is how I changed the text to be my variable. However, it correctly prints the selector but doesn't recognize it.

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Nived_Nambiar 18,138 Super User 2026 Season 1 on at

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Hi @apaulso9

Could you show how you have written the selector 🙂

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Nived N 🚀

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apaulso9 200 on at

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Absolutely! thank you very much for your time.
Here is the modified selector:
In text:
> frameset > frame[src="/epitomax/episode/Admission.jsp?episode_id=%EpisodeID%&case_no=100578&episode_type=admission&extra_arg=null"] div[Id="tab_div"] > ul > li > a[Text="Forms"]

Here is the output and error:

Here is the unmodified selector that works (only for the single episode id):

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Nived_Nambiar 18,138 Super User 2026 Season 1 on at

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Hi @apaulso9

One question , when you use the same selector which is failed while finding (with exact values) is it indicating the correct element ?

Also try this too, convert that %EpisodeNo% variable to number and then use that conversion output in selector, see whether that works ?

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apaulso9 200 on at

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It does, however, I think this has answered the questions of what is going wrong. I use a python script to print the number. Somehow Power automate is adding a second blank line when it stores the variable. Thus, I can't convert it to a number or use it in the selector text. Do you have any idea how to circumvent this? I am striping the python value, so I know the print statement itself does not have the extra line.

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Nived_Nambiar 18,138 Super User 2026 Season 1 on at

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Hi @apaulso9

You can use .Trimmed method on that variable which is coming out of the script , may be that would help to remove the blank line.

Also one question , are you using any print statement apart from one used to print the variable ?

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Nived N 🚀

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apaulso9 200 on at

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I am not, I split the current URL I am in, here is my statement:
I have confirmed that the trim function works and returns the correct number of variables. This did not fix the selector issue. Thank you for the idea though!

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Nived_Nambiar 18,138 Super User 2026 Season 1 on at

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@apaulso9 wrote:

I am not, I split the current URL I am in, here is my statement:

I have confirmed that the trim function works and returns the correct number of variables. This did not fix the selector issue. Thank you for the idea though!

I did not get what you meant by this what i have highlighted above ?

Also one question why are you using python for the above split, i think you can do same via PAD actions

Also while printing url2 , could you try this code instead ?

print(url2.strip())

Thanks & Regards,
Nived N 🚀

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Agnius Bartninkas Most Valuable Professional on at

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You could also use Split text to split the URL if that is something you actually need or simply Parse text with regular expressions to get a specific value from the URL.

Regardless, Python will always print it out with an extra new line to PAD. That's the way Python scripts work in PAD. Applying any stripping/trimming in the Python script will not change that. You need to trim the text in PAD after outputting it from Python. Use Trim text on the Python script output to do it.

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