How to convert string to int in logql

|label_format num={{102}}
|label_format num2 = {{90}}
| label_format ans= {{if gt .num .num2 }}good {{else}} bad {{end}}
| line_format {{.ans}}

I have created two labels and assigned values to them.When I perform the gt operation the output shows bad .Its considering the value of num and num2 as string while performing gt operation.

I want the comparison to be done on integer format and the output should be good