Clear array variable in a flow

[Kamil]

I have a working flow with for each loop. In loop i'm using array variable to build a list of item to send it in e-mail. In next loop i need to use the same variable, but I want to start adding to empty array. How to set array variable to be "blank new" for next iteration of loop? 

[v-xida-msft · Accepted solution]

Hi @Kamil,

Could you please share a screenshot of your flow's configuration?

Do you want to set the array variable to empty for next iteration of loop?

I think a empty array variable could achieve your needs, I have made a test on my side and please take a try with the following workaround:

• Add a proper trigger, here I use Flow Button trigger.
• Add a Variables-> "Initialize variable" action, Name set to GlobeArray, Typre set to Array and Value set to empty.
• Add a "Get items" action, specify Site Address and List Name.
• Add a "Apply to each" aciton, input parameter set to output of the "Get items" action. Within "Apply to each", add a "Append to array variable" action, Name choose GlobeArray, Value set to Due Time dynamic content of the "Get items" action.
• Under "Apply to each" action, add a "Compose" action, Inputs set to GlobeArray variable.
• Add a Variables-> "Initialize variable 2" action, Name set to EmptyArray, Type set to Array and Value set to empty.
• Add a "Set variable" action, Name choose GlobeArray variable, Value set to EmptyArray variable.

Image reference:

The flow works successfully as below:

The value of GlobeArray variable after first iteration of loop as below:

The value of GlobeArray variable after clearing array as below:

Best regards,

Kris

[Kamil]

Thanks for help.

[sh1]

You can also do a Set Variable with a value of null.

[Matt_Markahm]

I have used the approach of setting the variable equal to null, however it stopped working about a week ago. Has the syntax of the "null" function changed?