Problem in bulk creation of Virtual machines using .csv file

Question

Hello Guys
the problem is self-explanatory so i only put the screen shot here:
import-csv D:\2.csv |
ForEach-Object { new-vm -Name $_.VMname -MemoryStartupByte $_.memory -Path 'c:\testfolder' -NewVHDPath $_.myvhdpath -NewVHDSizeBytes $_.myvhdsize }
the error message is :
New-VM : Cannot bind parameter 'MemoryStartupBytes'. Cannot convert value "1024MB" to type "System.Int64". Error: "Input string was not in a correct format."
At C:\Untitled2.ps1:2 char:82
+ ... oryStartupByte $_.memory -Generation 2 -Path 'c:\testfolder' -NewVHDPath $_.myvh ...
+                    ~~~~~~~~~
    + CategoryInfo          : InvalidArgument: (:) [New-VM], ParameterBindingException
    + FullyQualifiedErrorId : CannotConvertArgumentNoMessage,Microsoft.HyperV.PowerShell.Commands.NewVMCommand
New-VM : Missing an argument for parameter 'Name'. Specify a parameter of type 'System.String' and try again.
At C:\Untitled2.ps1:5 char:8
+ new-vm -Name
+        ~~~~~
    + CategoryInfo          : InvalidArgument: (:) [New-VM], ParameterBindingException
    + FullyQualifiedErrorId : MissingArgument,Microsoft.HyperV.PowerShell.Commands.NewVMCommand
i usually search before asking problems but here i really don't know what to search about this certain situation.
i guest there must be something related to variables in powershell !
thanks in advanced

Answer 1

That's all there is. The $x now contains the number you want.
¯\_(ツ)_/¯
no, you didn't guide me.
i asked you where is the location of your writings :
$num='1732Mb' 
[scriptblock]::Create($num).Invoke()[0]
$x=[scriptblock]::Create($num).Invoke()[0]
$x.GetType()
in my code :
import-csv D:\2.csv |
ForEach-Object { new-vm -Name $_.VMname -MemoryStartupByte $_.memory -Path 'c:\testfolder' -NewVHDPath $_.myvhdpath -NewVHDSizeBytes $_.myvhdsize }
how i must use these two codes along with eachother? i understand them separatly but how to use them together?
if i was instead of you & i wanted to guide someone, i would help him in this way:
1- first type this block:
2- then write this
3- then write this
4- at the end your final script would be ......