APPW_JOB_SETBKCOLOR does not work for Button object

- AppWizard V1.52_6.44b

I am trying to change the color of the Button object using user code.

```
void ID_SCREEN_00__ID_BUTTON_00__WM_NOTIFICATION_CLICKED(APPW_ACTION_ITEM * pAction, WM_HWIN hScreen, WM_MESSAGE * pMsg, int * pResult) {
GUI_USE_PARA(pAction);
GUI_USE_PARA(hScreen);
GUI_USE_PARA(pMsg);
GUI_USE_PARA(pResult);

//~~~(2025.01.23)
APPW_PARA_ITEM aPara[6];
aPara[0].v = 0xffaa0000; // RED
APPW_DoJob(ID_SCREEN_00, ID_BUTTON_00, APPW_JOB_SETBKCOLOR, aPara);
//APPW_DoJob(ID_SCREEN_00, ID_BUTTON_00, APPW_SET_PROP_BKCOLORS, aPara);
}
```

The above code does not take effect.
What am I making mistake?

Among several buttons, I would like to change the background color of only 1 button.

Dear Anthony

Thank you very much. This worked.

However, this way all the buttons must have variables for the bkcolor.
I have to come up with some clever way to manage those variables.

I hope APPW_JOB_SETBKCOLOR will work in the future update of the emWin.

I think I found the solution.

By adding "aPara[1].v = 0;" it worked.

APPW_PARA_ITEM aPara[6];
//aPara[0].v = 0xffaa0000; // RED
aPara[0].v = GUI_GREEN; //
aPara[1].v = 0;
APPW_DoJob(ID_SCREEN_00, ID_BUTTON_00, APPW_JOB_SETBKCOLOR, aPara);