**Type**: long
**Parameters**
| Name | Type | Value |
| sessionId | String | ID of the session |
| attachmentId | long | ID of the attachment |
**Return values**
Size of the attachment
**Code structure**
**Type**: long
**Parameters**
| Name | Type | Value |
| sessionId | String | ID of the session |
| attachmentId | long | ID of the attachment |
**Return values**
Size of the attachment
**Code structure**