Power Query Loop issue

[msksenthil]

I would like to create the loop and concatenate the list records in power query function but I'm getting error. 

M-Code

(loop as number, T1 as table, CurString as any) => let
CurrentLoop = loop + 1,
T1ColumnCount = 5,
T1ColumnValues = Table.ColumnNames(T1),
CurrentString =if (CurrentLoop = 0) then Text.From(T1ColumnValues{CurrentLoop}) else Text.From(CurString) & Text.From(T1ColumnValues{CurrentLoop}),
OutputString = if (CurrentLoop = T1ColumnCount) then CurrentString else @Query2(CurrentLoop, T1, CurrentString)
in
OutputString

Error:

Expression.Error: There weren't enough elements in the enumeration to complete the operation.
Details:
[List]

Many thanks in advance

[mahoneypat]

I suspect this is due to the fact that counting in power query starts at zero.  when you get to loop = 5, you are actually pulling the name of the 6th column, which doesn't exist.

Pat

[msksenthil]

Bingo! It's working great. But when I make it dynamic like "T1ColumnCount =Table.ColumnCount(T1)" it's showing the below error

Expression.Error: There weren't enough elements in the enumeration to complete the operation.
Details:
[List]

[Fowmy]

@msksenthil 

What is @Query2 in this context?

Can you share the complete file after removing confidential data?

[msksenthil]

@Fowmy 

Query2 is the own function name.

Sorry I couldn't attach the pbix. 

Table format