Hi everyone!

I know how to do customisation for buttons "Save" and "Discard", it works good when I open file "form_status_indicator.xml" and change buttons' style in the file. 

But I want to do these changes by custom addon, installing this changes. There is a trouble with inheriting template of base style button.

Here is my code of .xml file which should do changes with buttons, it installs successfully, but do nothing.

https://imgur com/a/PLxFaKo (put "." between "imgur" and "com" to see the screenshot)

An important detail, that I need __manifest__ py file to inherit these changes successfully.

Here is an example of my manifest file which I used before:

{
    'name': "Custom Form Status Indicator Styles",
    'version': "1.0",
    'summary': "Customizes the form status indicator buttons in Odoo",
    'license': "AGPL-3",
    'description': """This module replaces the default save and cancel buttons in the form status indicator with customized versions.""",
    'category': 'Custom Development',
    'author': 'vova9199',
    'website': 't.me/vova9199',
    'depends': ['base_setup', 'web'],
    # 'data': [
    #     'views/form_status_indicator.xml',
    # ],
    'data': [],
    'demo': [],
    'assets': {
        'web.assets_backend': [
            'custom_change_buttons/static/src/views/form/form_status_indicator/form_status_indicator.xml',
        ],
    },
    'installable': True,
    'application': False,
    'auto_install': False,
    'sequence': 10100,
}

 When I use my .xml file in "data" odoo says that "incorrect schema" or something like that.

Please, share your way to install button customization by addon.