Contain Write-host in a variable - powershell

Question

I am after storing write-host as a variable for multiple lines
So I want to encompass the write-host section below so it is essentially copied and pasted to the beginning of the loop, updating certain parameters.
the script is to check a file and see how many lines are in the file, this then carries out a function on each line, I want to update the user on the progress, however during the loop I cls and want to update the progress. Simple progress bar.
However I am unable to do so, so I created a variable that stores this information and updates accordingly.~
The varible only contains the information I want to update, see code.
I have tried the following;
Surrounding in parenthese,
using , to change to a new line,
Encasing the statement in ().
$56 = (Write-Host "This is a test" -foregroundcolor green),
(Write-host "Same Test only bigger"-foregroundcolor red) ,
"No!",
"I am King" $King ++
#$56
Output is
This is a test
Same Test only bigger
I want it to only display if I use the variable $56 as you can see it pulls the write-host without the variable.

Answer 1

Write-Host doesn't return its output as an object; it bypasses the pipeline to go directly to the console, effectively "returning" a null string. As such, you can't save the result of a Write-Host in a variable.
You can, however, save a script block in a variable, and execution of any statement in the script block variable will be deferred until the variable is invoked with the & expression, e.g.,
$fifty-six = { Write-Host "This is a test" -foregroundcolor green }
& $fifty-six
You should, however, consider carefully what your goal is, and whether there might not be a better way to do things. If you are interested in tracking the progress of a function, and you are using PowerShell 3.0 or later, you may want to look into Write-Progress instead.

Answer 2

I still think a function can do this:
function Output {
param([int]$lineNumber)
switch ($lineNumber) {
1 {Write-Host "This is a test" -foregroundcolor green}
2 {Write-host "Same Test only bigger"-foregroundcolor red}
3 {"No!"}
4 {"I am King"}
}
}
PS H:\> Output 1
This is a test
PS H:\> Output 4
I am King
I don't know what King is here, but if you want to use that as an increment, then you can just do this:
PS H:\> $King = 1
PS H:\> Output $King
This is a test
PS H:\> $King++
PS H:\> output $King
Same Test only bigger