Need to loop my script with set of values & pass the same into a variable name across the script

[nandhaadjame200]

Need to loop my script with set of values & pass the same into a variable name across the script for internal usage. I think to go with for each loop, but please help to implement the same and also help to exit the for loop once list of values to variables completed. Also i faced an issue when i tried this, like my next block code is not executed, so i concluded it as my for loop implementation is having issue. So, please help me to implement it from scratch.

Thanks in advance.

My Base Script:

Set vTable = ''; // Need to send different values & based on the values my script should loop & execute.

If Alt(FileSize('$(vQVDRoot)\*Files.qvd'), 0) <= 0 then
set vFirstLoad=3;
ElseIf Alt(FileSize('$(vQVDRoot)\$(vTable)Log.qvd'), 0) <= 0 then
set vFirstLoad=1;
ElseIf Alt(FileSize('$(vQVDRoot)\$(vTable)Log.qvd'), 0) > 0 then
If Alt(FileSize('$(vQVDRoot)\*Files.qvd'), 0) > 0 then
set vFirstLoad=0;
End If
End If

if(vFirstLoad=1) then

For each LogFile in filelist( vQVDRoot & '\*Files.qvd')
Log:
LOAD SubField([File],'\',-1) as [File_Name],
SubField(FileBaseName('$(LogFile)'),'\',-1) as [SourceFileName],
'$(LogFile)' as [FileLocation], [File],
[FileUploadDate]
From [$(LogFile)] (qvd);
Next;

Elseif(vFirstLoad=0) then

FOR Each File in filelist ('$(vQVDRoot)\*Files.qvd')
CurrentFileList:
Load '$(File)' as [File], Date(now()) as [FileUploadDate]
autogenerate 1;
next File

OldFileList:
LOAD [File] as [History]
FROM '$(vQVDRoot)\$(vTable)Log.qvd' (qvd);

NoConcatenate
NewFiles:
Load [File] as [NewFile]
resident CurrentFileList
Where not exists([History], [File]);

If(Count([NewFiles])>0) then
Log:
LOAD *
FROM [$(vQVDRoot)\$(vTable)Log.qvd] (qvd);

For each LogFile in filelist('$(vQVDRoot)'&'\*Files.qvd')
Concatenate(Log)
LOAD SubField([File],'\',-1) as [File_Name],
SubField(FileBaseName('$(LogFile)'),'\',-1) as [SourceFileName],
'$(LogFile)' as [FileLocation], [File],
[FileUploadDate]
FROM '$(LogFile)' (qvd);

SET Concatenate = concatenate;

Next;
End if;
Elseif(vFirstLoad=3) then
Trace Log File Does not Exist!;
END IF

If(vFirstLoad=3) then
Trace Log File Does not Exist!;
Elseif(vFirstLoad=1) then
STORE Log into [$(vQVDRoot)\$(vTable)Log.qvd] (qvd);

Drop table Log;
Elseif(vFirstLoad=0) then
If(Count([NewFiles])>0) then
STORE Log into [$(vQVDRoot)\$(vTable)Log.qvd] (qvd);

Drop Tables Log,CurrentFileList,OldFileList,NewFiles;
End If;
End if;

Thanks

Nandhakumar