Modbus Float32

[Leo681]

Hello, i have and aditional problem,

I have working this and its ok:

grp.checkupdate('39/0/22',(mb:readregistervalue(23316,"int32","w")))

I want to add the value_delta and type like this:

grp.checkupdate('39/0/22',(mb:readregistervalue(23316,"int32","w","value_delta" 500))) 

but it doesnt work fine, no errors but dont filter the result.

Any idea?

Thanks in advance