NSIS - CopyFiles Directive not working with variables as parameters?

Question

I want to copy files/folders from one folder of enduser-system to another folder of enduser-system. However the CopyFiles directive seems to be not working, when passing variables like $0, $1 as source parameter..

...
SetRegView 64
ReadRegStr $0 HKLM "${PRODUCT_HOME_ROOT}\$1" "License"
MessageBox MB_OK "$0"     
CreateDirectory '"$INSTDIR\application\license"'
CopyFiles "$0" "$INSTDIR\application\license"

The string stored in $0 is checked, and is identical to the absolute path of the file. If i pass the source parameter as "C:\path_to_folder", the CopyFiles directive is working, as expected. What am i doing wrong ?

Answer 1

A variable should work but the actual string stored in that variable should not be double quoted and it should only use backslashes (\), not forward slashes (/).

Section
InitPluginsDir
CreateDirectory "$PluginsDir\Src"
File "/oname=$PluginsDir\Src\test.txt" "${__FILE__}"
CreateDirectory "$PluginsDir\Dst"
StrCpy $0 "$PluginsDir\Src\test.txt"
CopyFiles "$0" "$PluginsDir\Dst"
ExecShell explore "$PluginsDir\Dst"
MessageBox MB_OK "Done?"
Quit
SectionEnd