Why come commands can run in original CMD but not in fluentterminal's cmd?

I installed Powershell7, and add it's path to the system's path variables. and then, when I type"pwsh-preview" in the plain cmd.exe, which locates in the address"$directory of powershell7$/7-preview/preview/", I can run powershell 7 commands in cmd.exe.
And I deployed cmd in Fluent terminal. but the command"pwsh-preview"， cannot run in fluent terminal. How can I fix it? thanks .