Working with Variables > About Variables in Dialog Designer > About Passing Variable Values
	About Passing Variable Values

Variables in Dialog Designer are always local to an application or project. For example, if you are using a Dialog Designer speech project as a module in another application, the application cannot "see" the variables in that module. Any information that passes between them must be passed as input or output parameters.

Dialog Designer provides several ways for applications to pass variable values back and forth, as described in the following sections:

• Between Applications and Modules

• Between Applications and VoiceXML Objects

• Between Applications and IC Systems

• Between Applications and CTI Systems

• Between Speech and Call Control Applications

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