For loop not working properly

Hi everyone,

I'm trying to do a simple for loop to get some fields from getimplementingthingswithdata into another property to be used in a collection.

When I execute the following code without the For loop, it works fine. But I can't seem to get the for loop working. 

Can anyone help me figure out what is wrong with my code?

the var result is declared earlier in the code.

// result: INFOTABLE dataShape: "RootEntityList"

let sites = ThingTemplates["BALL.Sites_ThingTemplate"].GetImplementingThingsWithData();

let tablelenght = sites.rows.lenght;

for (let x = 0; x <= tablelenght; x++) {

// SitesCollec_datashape entry object

        let newEntry = {

            Site: sites.rows[x].name, // STRING [Primary Key]

            Location: sites.rows[x].description, // STRING

            Img: sites.rows[x].ImagemPlanta, // IMAGELINK

            ICL: sites.rows[x].ICL, // NUMBER {"minimumValue":0,"maximumValue":100}

            EficienciaDQO: sites.rows[x].EficienciaDQO, // NUMBER {"minimumValue":0,"maximumValue":100}

            EficienciaFluoreto: sites.rows[x].EficienciaFluoreto, // NUMBER {"minimumValue":0,"maximumValue":100}

            Indicador4: undefined // NUMBER

        };

result.AddRow(newEntry);

}

me.implemSites = result;