How to use selectFrame

Im trying ot use selectFrame as per reference i command:
selectFrame | index=1 |

after that in the log i can see:

[info] Executing: | selectFrame | index=1 | |

[info] Expand variable ‘index=1’ into ‘index=1’

[error] Timeout

Is this expected behavior? am i doing something wrong ?

Also with parameter name=framename

[info] Executing: | selectFrame | name=framename| |

[info] Expand variable ‘name=framename’ into ‘name=framename’

[error] Invalid argument

… How is that argument invalid