# getXValue(_:yValue:fromParameter:at:) Gets the xy position value (in 0.0 - 1.0 floating point) from a parameter. ``` func getXValue(_ x: UnsafeMutablePointer, yValue y: UnsafeMutablePointer, fromParameter parameterID: UInt32, at time: CMTime) -> Bool ``` ## Parameters `x` Pointer to the plug-in variable for the x value. `y` Pointer to the plug-in variable for the y value. `parameterID` Unique identifier for the parameter. `time` Specified time to get the values. ## Return Value Returns `YES` if the values are retrieved successfully; `NO` otherwise. ## Discussion Depending on the host application, the time value may be relative to the start of the timeline or to the start of the clip. See [Understanding time in FxPlug](/documentation/Professional-Video-Applications/understanding-time-in-fxplug). --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)