MS Flow getting failed while applying condition

[NeetaMehra]

I have a flow which is triggered when someone submits MS Form, it generates an email notification.

There is a question (Type of Request) in form which has multiple options –

1. Pre-DD
2. DD
3. DD and Transitions
4. Consulting
5. Project – Discovery
6. Project – Delivery

I have applied a condition for “Type of Request”, if Type of Request contains word “Project”, email notification should go to group A, otherwise to group B.

However, my flow is getting failed with below error message. Could someone please help. Thanks

InvalidTemplate. Unable to process template language expressions in action 'Send_an_email_to_requestor_and_Copy_Project_Team' inputs at line '0' and column '0': 'The template language function 'slice' expects its first parameter to be of type string. The provided value is of type 'Null'.

[creativeopinion]

@NeetaMehra The function you are using expects a string as the first parameter. However, the value you are trying to pass is null. You'll need to account for that in your expression. I cover how to account for null or undefined values in this section of my YT Tutorial: 7 Functions You Need to Know | ⚡️Expression Essentials: Part 1⚡️

In the full tutorial I cover 7 functions you need to know when getting started with expressions.

1️⃣ empty()

2️⃣ coalesce()

3️⃣ equals()

4️⃣ if()

5️⃣ concat()

6️⃣ length()

7️⃣ split()

I cover how to use these functions in expressions and I’ll also cover common mistakes when it comes to writing expressions and show you a few tips and tricks along the way.

As a beginner or even an intermediate flow builder—expressions can seem a bit complex at first, I’m going to try to simplify it for you. If you want to level up your flows by writing expressions—keep watching!

IN THIS VIDEO:

✅ What is an Expression?

✅ What is a Function?

✅ What Does Wrapping a Function Mean?

✅ How Do I Insert an Expression?

✅ How to Use a Compose action

✅ How to Navigate the Expression Builder with Arrow Keys

✅ How to use the Expression Tooltip

✅ Common Mistakes When Writing Expressions

✅ How to differentiate a null from an empty string

✅ How to Get Dynamic Content When it’s Not Listed

✅ How to Use a Get Item Action to Verify Dynamic Content Output

✅ How to Convert Strings to Lower Case

✅ How to Troubleshoot the if() Function

You may also be interested in these YT Tutorials:

How to Get a Microsoft Form RSVP Response into a SharePoint List

In this Microsoft Power Automate tutorial, I’ll show you how to get your Microsoft Form responses into SharePoint. I’ll cover how to build a Microsoft form with conditional fields by using branching. You’ll learn how to format your multiple choice responses for a SharePoint multi-choice column as well as converting it to text. I’ll also show you how to take a text response and convert it to a number with a switch action and with an expression. After adding the response to SharePoint, we’ll send the user an email confirmation with all the details of their form submission.

IN THIS VIDEO:

✅ How to get a Microsoft Form Response into SharePoint

✅ How to get a Microsoft Form ID

✅ How to get a Microsoft Form response

✅ How to Build a Microsoft Form with Conditional Fields

✅ How to used Branching in Microsoft Forms

✅ How to format Microsoft Form multiple choice responses for a SharePoint multi-choice column

✅ How to parse a Microsoft Form multiple choice response as string of text

✅ How to convert a text response to a number

✅ How to use the Switch action

✅ How to create a custom email confirmation for a Microsoft Form submission

✅ How to Create a Custom View in a SharePoint list

✅ How to use the Compose Action

✅ How to write Power Automate Expressions

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You might also find this YT Tutorial helpful: How to Get Microsoft Form File Uploads Attached to an Email 📧

In this Microsoft Power Automate Tutorial I’m going to cover where file uploads from your Microsoft Forms are saved. I’ll also show you how attach the uploaded files to an email and how to dynamically name the files and customize the recipient of the email based on the selections made in your Microsoft Form. I will also cover how to handle responses that don’t include any file uploads.

IN THIS VIDEO:

‌✅‌ Two types of MS Forms

‌✅‌ Where Microsoft Personal (OneDrive) Form File Uploads are Saved

‌✅‌ Where Microsoft Group Form File Uploads are Saved

‌✅‌ How to Add a File Upload Question to an MS Form

‌✅‌ How to get a Microsoft Form ID

‌✅‌ How to get a Microsoft Form Response

‌✅‌ How to Get the Dynamic Content Microsoft Form File Upload Content

‌✅‌ How to handle Single and Multiple Microsoft Form File Uploads

‌✅‌ How to use a Scope action to Organize and Group Your Flow Actions

‌✅‌ How to Get the File Content from an MS Form File Upload

‌✅‌ How to Collect All Files Uploaded to a MS Form and Attach to an Email

‌✅‌ How to Handle MS Form Response When a File Isn’t Uploaded

‌✅‌ How to Create an Email Key

‌✅‌ How to Send an Email to a Specific Recipient Based on Form Selection

‌✅‌ How to Create a Dynamic Output Based on Form Selection

Hope this helps!

If I helped you solve your problem—please mark my post as a solution ✅.
Consider giving me a 👍 if you liked my response!

👉 Level up your Power Automate skills by checking out my tutorials on YouTube
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[NeetaMehra]

Thanks for you reply but I am sorry, it's bit difficult for me to understand as I am just a beginner. Could you please provide me a simple solution how I can fix my flow. thank you.

[NeetaMehra · Accepted solution]

the issue in my flow has been resolved using this formula:

if(empty(triggerOutputs()?['body/UnifyID']),'Generic',triggerOutputs()?['body/UnifyID'])