A plug-in that inherits from Animatable may make its parameter block available for other plug-ins by implementing the methods:

• Animatable::NumParamBlocks()
• Animatable::GetParamBlockByID()
• Animatable::GetParamBlock()

When using parameter blocks it is always preferable to use GetParamBlockByID() and to pass a ParamID. Alternatively see the topic Accessing the Parameter Block of any Plug-in, in the Tips and Tricks section.