filename creation in powershell script

Hi Team,

I am new to power shell , I need to create a log file with the date and timestamp , below is the script used for that purpose , I am getting the error each time i ru n it .Any help is really appreciated

For /F "tokens=2-4 delims=/ " %%a in ('date /t') 
do (set  vardate=%%c%%a%%b)

For /F "tokens=1-2 delims=/:" %%a in ("%TIME%") 
do (set vartime=%%a%%b)

set vartime=%vartime: =0%


set logfile="ETLUPD_%vardate%_%vartime%"

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