Here it is my called function.

pragma solidity ^0.4.19; contract Called{ string public name;

function set(string _var) {
    name = _var;
}

function   get() view returns (string){
    return name;
}


function A () payable {

}

}

Here it is my Caller function.

pragma solidity ^0.4.19;

interface Called{

function set(string);

function get() view returns (string);

}

contract Caller {

string public new_name;

Called public called_address;

function set_address(address _addy) {
    called_address = Called(_addy);
}

function caller_set(string _var) {
  
    called_address.set(_var);
} 
function caller_get() {
    new_name= called_address.get();
    
}


function B () payable {

}

}

I am here interacting with called contract using caller contract. It works fine with in remix browser(without connected to ethereum network). When i connect remix browser to my private ethereum network caller_set function of caller contract works fine but when i called caller_get function it gives the error "gas required exceeds allowance or always failing transaction". I have given more and more gas but it always failed. somebody please help.