Filter of comparison works wrong

The following codes run with no item returned:
jsondata := []byte(`{
"table1": [
{
"age": 30,
"name": "John"
}
]
}`)
var data interface{}
json.Unmarshal(jsondata, &data)
result, err := jmespath.Search("table1[?age > '25']", data)
------------------------------------------------------------------------------------

After reading the go-jmespath codes, i found that in the file "github.com\jmespath\go-jmespath@v0.4.0\interpreter.go", line 52, need to consider a string to float convertion, otherwise, we cannot get the right search result.