import os

def write_file(working_directory, file_path, content):
    abs_working_dir = os.path.abspath(working_directory)
    abs_file_path = os.path.abspath(os.path.join(working_directory, file_path))
    if not abs_file_path.startswith(abs_working_dir):
        return f'Error: Cannot write to "{file_path}" as it is outside the permitted working directory'
    if not os.path.exists(abs_file_path):
        os.makedirs(abs_file_path)

    try:
        if os.path.exists(abs_file_path):
            with open(abs_file_path, 'w') as f:
                f.write(content)
            return f'Successfully wrote to "{file_path}" ({len(content)} characters written)'
    except Exception as e:
        print(f"Error: {e}")