Table of Contents

Set Variable

Hajar Updated by Hajar

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for Landbot (Web)

Note: This Block is only available on Premium accounts.

Set a Variable is a powerful block that allows you to create, establish a format, and set a value to a variable. And now you can also use it to unset a variable's value!

To create the block just drag and drop the green dot and select "Set variable":

If you are unfamiliar with the concept of a variable, please refer to this article.

You can think of a variable as a box, that you can name and where you can store "things". In this case, "things" are values (numbers, texts, dates, etc...).

Block anatomy & set up

Set mode

Create or select a variable to modify:

You can select a variable that already exists or create a new one, just type the name (no spaces are allowed), select the format, and click on "create".

Select the format:

Here you need to specify the type of format the variable will store:

You have four options:

  1. String (text)
  2. Number (float)
  3. Date (YYYY/MM/DD format)
  4. Array (a group of elements of the same type)
Boolean: It is not possible to create or save variables in this type of format, because this is a system variable that is used only in the Conditions block to check if the agents are online.

"Type the value" section:

In this case, as the label says, you can type the value you want to give to the variable. It is also possible that instead of typing down such value, making it depends on other variable values.

Perform a (mathematical) calculation

Number and Dates can be used to make calculations for the variables.

For numbers, the available operations are:

  • Addition (+)
  • Subtraction (-)
  • Multiplication (*)
  • Division (/)
  • Modulus "remainder" (%)

For dates, the available operations are:

  • Addition (+)
  • Subtraction (-)

Using date operations, based on a variable that is a date (with Landbot format) you can sum or subtract days or months, or years to that specific date:

Finally, once the block is set, you have two possible outputs: Success or Failed.

Variable names have a 100 characters limit. If surpassed, variables might have issues being displayed in the bot.

Unset mode

Now it's possible to leave a variable's value empty by switching to Unset modeπŸ“­

Unset a variable means to assign an empty value to an existing variable, when the flow goes through this block.

Note: It will not delete the variable itself, only leave its value empty.
Unset multiple variables' values:

You can add multiple variables to unset their values at the same time by clicking on Add button:

It's possible to unset any custom variable, however, you cannot unset:

- System variables (Last seen, Created, Time references, URL, Country, Browser, Device, OS)
- Lead data (Name, Phone, Email, Company, ID)

For more information about Landbot System variables, please check here.

Why is there a "failed" option for a set variable block?

If everything is correct, we will continue the flow with the Success (green output).

However, if the user had used the wrong input or format and we are using the "Perform a calculation?" feature, it will generate an error, and the flow will continue through the Failed output. It is a good practice to use it, to avoid the bot from crashing.

Block user examples

Below three short example of how the Set a variable block works:

EXAMPLE 1 - Concatenate variables: In case we would like to store in a variable (@userinfo) many inputs from the user (@name, @email, and @phone), to do so, we need to write the variables in a different way, here is how:

EXAMPLE 2 - Build URL with variables: Maybe you need to build a URL , where the customer will be redirected, with values from the inputs, here is how:

Warning: the URL must be an HTTPS://Β otherwise you will get an error that will not allow you to save changes.

EXAMPLE 3 - Update variables value with a new value: We can add values to the same variable, progressively one question at a time. Here is how it would work:

Set Variable block Troubleshooting & Faqs

Can I do calculations between two dates?

Currently is not possible to do calculations between two dates with Set a variable block.

How can I Set a Variable with the Date format?

In the Set a variable block, the format for a Date variable should be YYYY-MM-DD

Keep in mind that in Landbot, the date is saved in the format of YYYY-MM-DD, with the dash or hyphen (-), and won't be accepted if the date is added with a slash (/)

For WhatsApp

This block behaves exactly the same way as in the landbot (web) version.

For Facebook Messenger

This block behaves exactly the same way as in the landbot (web) version.

How did we do?

How to Perform Basic Calculations