How do I copy and paste a formula

[#1]

I am using 

I am trying to paste the following formula from one data table to another (similar) table:

However when I paste it into the new table I get an error message and the formula will not work

How do I resolve this so that the formula will operate properly?  Thanks

[#2]

issues and explanations:

• 
  you tried to paste the formula into column "Day". this leads to a loop day = f(day) - and the evaluation is interrupted.
• 

  you renamed the input column day -> "Day of week"
  no column "day" -> formula complains

• Character vs. Number issue.
  your original formula need "day" as Character, but in the new table "day" is a number
  --> open the column properties and change the data type from numeric to character

[#3]

But as "Day" is numeric in your new table, the easiest solution is:
right click on the column header and go to New Formula Column / Date Time / Day of Week Name

Then Jmp will generate a new column Day of Week[Day]