func: function getFreeField(uint256 _VegetableId) public isInitialized {
  		require(OwnerVegetableFieldSize[msg.sender][_VegetableId]==0);
  		OwnerVegetableFieldSize[msg.sender][_VegetableId]=FreeFieldSize;
  		OwnerVegetableStartGrowing[msg.sender][_VegetableId]=now;
  		
      }