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search:
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---
# StateChangeMatch
**Source definition:** [`src/bitdrift/public/unary/workflows/v1/workflow.proto#L216-L232`]()
| Field | Type | Description |
|---|---|---|
| from | [bitdrift.public.unary.workflows.v1.StateCondition](bitdrift_public_unary_workflows_v1_StateCondition.md "bitdrift.public.unary.workflows.v1.StateCondition") | Match conditions for the previous state. Leave empty to only match on the new value. |
| to | [bitdrift.public.unary.workflows.v1.StateCondition](bitdrift_public_unary_workflows_v1_StateCondition.md "bitdrift.public.unary.workflows.v1.StateCondition") | Match conditions for the updated state. Leave empty to only match on the old value. |
| scope | [bitdrift.public.unary.workflows.v1.StateScope](bitdrift_public_unary_workflows_v1_StateScope.md "bitdrift.public.unary.workflows.v1.StateScope")
must be a defined enum value | The scope of the state value being observed. |
| key | string
up to 100 chars | The key of the state value within the given scope. |
| generic_match | [bitdrift.public.unary.workflows.v1.GenericMatch](bitdrift_public_unary_workflows_v1_GenericMatch.md "bitdrift.public.unary.workflows.v1.GenericMatch") | Additional match conditions for this OOTB event. This is an AND in addition to the previously defined event. |
#### Example
```json
{
"from": {
"match_type": "STRING",
"operator": "GREATER_THAN",
"value": "example"
},
"generic_match": {
"base_matcher": {
"log_field": "field_name",
"operator": "EQUAL",
"string_value": "example"
}
},
"key": "example-key",
"scope": "GLOBAL_STATE",
"to": {
"match_type": "STRING",
"operator": "GREATER_THAN",
"value": "example"
}
}
```