[variable_global_exists](variable_global_exists.md) [variable_global_get](variable_global_get.md) [variable_global_set](variable_global_set.md) [variable_instance_exists](variable_instance_exists.md) [variable_instance_get](variable_instance_get.md) [variable_instance_get_names](variable_instance_get_names.md) [variable_instance_set](variable_instance_set.md)