# TD Operation Restructuring ```json { "@context": "https://www.w3.org/2022/wot/td/v1.1", "properties": { "analog1": { "type": "number", "minimum": 0, "ops": { "writeproperty": { "forms": [ { "protocol": "bacnet", "href": "bacnet://5/0,1/85", "bacv:service": "WriteProperty", "security":["admin_sc"] } ] }, "observeproperty": { "additionalData": { "minimumChange":{ "type": "number", "readOnly": false, "minimum": 0 } }, "forms": [ { "protocol": "bacnet", "href": "bacnet://5/0,1/85", "bacv:service": "SubscribeCOVproperty", "bacv:covIncrement":"additionalData/minimumChange" }, { "protocol": "http+sse", "href": "https://host/path/?{bla}", "htv:uriVariables":{ "bla":"additionalData/minimumChange" } } ] } } } } } ```