Tflite input data type (int8) conversion in javascript

var tf = require("tensorflow").create(3072, model);

function get_data(a){

var d = [Math.round(a.x*100),Math.round(a.y*100),Math.round(a.z*100)];
  
input_array.push(d);


if (input_array.length > SAMPLE_SIZE-1){


var row_array = [];
var time_step_array = [];
var final_input = [];
var depth_array = [];

for (i=0; i<input_array.length;i++){
    row_array = [];
    depth_array = [];

for (j=0;j<input_array[0].length;j++){
    depth_array.push(input_array[i][j]);  
}
row_array.push(depth_array);
time_step_array.push(row_array);
}

final_input.push(time_step_array);


tf.getInput().set(final_input);

//Terminal.println(tf.getInput());

tf.invoke();

Terminal.println(tf.getOutput());

input_array = [];

}


}


Bangle.on('accel', get_data);

This is my code and my model takes input as array i am always getting the same output when printed. I am pretty sure there is no problem in model as i loaded the tflite model and tested the output in my desktop and it is working fine.