Crash when trying to set a Font Menu string in FxPlug

Apple Feedback Assistant ID: FB13502566

DESCRIBE THE BUG: I have created a Font Menu using:

paramAPI.addFontMenu(
    withName: "Font",
    parameterID: globalParametersID_Font,
    fontName: defaultFont,
    parameterFlags: FxParameterFlags(kFxParameterFlag_DEFAULT)
)

I can read the parameter using:

if paramAPI.getStringParameterValue(&stringValue, fromParameter: globalParametersID_Font) {

This works well.

However, if I try and set the font string, it crashes Final Cut Pro:

if !(paramSetAPI?.setStringParameterValue(globalFont, toParameter: globalParametersID_Font))! {

Here's the crash log:

-------------------------------------
Translated Report (Full Report Below)
-------------------------------------

Process:               Final Cut Pro [65927]
Path:                  /Applications/Final Cut Pro.app/Contents/MacOS/Final Cut Pro
Identifier:            com.apple.FinalCut
Version:               10.7.1 (410082)
Build Info:            ProEditor-41000082016000000~12 (1D1004)
App Item ID:           424389933
App External ID:       861999800
Code Type:             ARM-64 (Native)
Parent Process:        launchd [1]
User ID:               501

Date/Time:             2023-12-30 17:15:10.6649 +1100
OS Version:            macOS 14.1.2 (23B92)
Report Version:        12
Anonymous UUID:        CF7BEE6E-B8B3-12C6-A359-37A97C616B4B

Sleep/Wake UUID:       BBF1728E-792C-4B7B-B799-EC7338D89781

Time Awake Since Boot: 300000 seconds
Time Since Wake:       1418 seconds

System Integrity Protection: enabled

Crashed Thread:        0  Dispatch queue: com.apple.main-thread

Exception Type:        EXC_BAD_ACCESS (SIGSEGV)
Exception Codes:       KERN_INVALID_ADDRESS at 0xfffffffffffffff0
Exception Codes:       0x0000000000000001, 0xfffffffffffffff0

Termination Reason:    Namespace SIGNAL, Code 11 Segmentation fault: 11
Terminating Process:   exc handler [65927]

VM Region Info: 0xfffffffffffffff0 is not in any region.  
      REGION TYPE                    START - END         [ VSIZE] PRT/MAX SHRMOD  REGION DETAIL
      UNUSED SPACE AT START
--->  
      UNUSED SPACE AT END

Thread 0 Crashed::  Dispatch queue: com.apple.main-thread
0   ???                             0xfffffffffffffff0 ???
1   Ozone                                  0x120eb16c8 -[OZFxPlugParameterHandler_v4 setStringParameterValue:toParm:] + 40
2   ProAppsFxSupport                       0x10336f59c -[PAETileableXPCPlugIn setValueForTransaction:] + 32
3   ProAppsFxSupport                       0x103304ef0 -[PAEFxTransactionProcessor processTransactionArray:] + 1184
4   Ozone                                  0x120e16fe8 __90-[OZFxXPCAPIMediator hostSession:transactionID:parameterUpdates:endCustomParameterAction:]_block_invoke_2 + 36
5   Flexo                                  0x109a13dd8 _FFPerformModelWriteUsingBlock + 104
6   Ozone                                  0x120e16f78 __90-[OZFxXPCAPIMediator hostSession:transactionID:parameterUpdates:endCustomParameterAction:]_block_invoke + 88
7   ViewBridge                             0x197f0a364 __wrapBlockWithVoucher_block_invoke + 56
8   ViewBridge                             0x197fa9c00 deferredBlockOpportunity_block_invoke_2 + 360
9   CoreFoundation                         0x18f905894 __CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK__ + 28
10  CoreFoundation                         0x18f9057a8 __CFRunLoopDoBlocks + 356
11  CoreFoundation                         0x18f9045e0 __CFRunLoopRun + 812
12  CoreFoundation                         0x18f903c5c CFRunLoopRunSpecific + 608
13  HIToolbox                              0x199e80448 RunCurrentEventLoopInMode + 292
14  HIToolbox                              0x199e80284 ReceiveNextEventCommon + 648
15  HIToolbox                              0x199e7ffdc _BlockUntilNextEventMatchingListInModeWithFilter + 76
16  AppKit                                 0x1930dec54 _DPSNextEvent + 660
17  AppKit                                 0x1938b4ebc -[NSApplication(NSEventRouting) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 716
18  AppKit                                 0x1930d2100 -[NSApplication run] + 476
19  LunaKit                                0x102c7bcb0 LKApplicationMain + 204
20  dyld                                   0x18f4ad0e0 start + 2360

You can find the full crash log here.

TO REPRODUCE: Try set a Font Menu item programatically in FxPlug.

EXPECTED BEHAVIOUR: You should be able to set the Font Menu using a string.

SCREENSHOTS: NA

SPECS:

2021 16-inch MacBook Pro (M1 Max, 64GB RAM, 8TB SSD)
macOS Sonoma 14.1.2
Final Cut Pro 10.7.1

ADDITIONAL COMMENTS: The documentation also clearly has never been proof read:

Note, it says "Creates a help push button parameter".

CommandPost / FCPCafe

Crash when trying to set a Font Menu string in FxPlug #316

Apple Feedback Assistant ID: FB13502566