Help needed Flow failing due to 'Null' value

[gazzo1967]

HI All

Could some one help me with a Compose expression?

I have a flow that is creating a dynamic HTML based on a sharepoint list item but when i trigger my flow it is saying that the item i am composing is NULL when i has a entry in it.

My expression is this

replace(outputs('Compose_assess_number'), '{damage}',body('Get_item')?['adjust_backplate']?['Value'])

but the flow run error message is

InvalidTemplate. Unable to process template language expressions in action 'Compose_crit1' inputs at line '1' and column '2778': 'The template language function 'replace' expects its third parameter 'new string' to be a string. The provided value is of type 'Null'. Please see https://aka.ms/logicexpressions#replace for usage details.'.

Any help appreciated

Gary

[ScottShearer]

@gazzo1967 

Have you taken a look at the output of the Get item action in your Flow?  Does it confirm that there is a value in the adjust backplate choice column?

[gazzo1967]

@ScottShearer 

Hi Scott

Yes i did check the outputs on my test from Get Item and the field is populated correctly

Gary

[gazzo1967 · Accepted solution]

After googling intensely i have at last come across the issue.

The original sharepoint list was made from duplicating a previous one so the columns have been renamed and you have to use the original internal sharepoint column name..

Just to help people 

If you have this issue then click your sharepoint list options to list view

Hover over the column name and you will see the original column name.

i used this and it works fine.

Gary