## How can we reproduce this bug suspect?
I have two properties style and lastStyle.
My code will check the value for **style** comparing to **lastStyle** [1].
If not equal, the style will take effect and update lastStyle to the value same with style[2].
Otherwise, do nothing.
code:
```js
function onSettingsChanged() {
System.println(
"---------------------onSettingsChanged--------------------------"
);
var style = Properties.getValue("style");
var lastStyle = Properties.getValue("lastStyle");
System.println("Look style is:" + style);
System.println("Look the last style is:" + lastStyle);
//Compare current style with the last to make sure the style change
if (style != lastStyle) {
hourColor = getHourColor(style);
Properties.setValue("lastStyle", style);
System.println(
"Look! lastStyle after set:" + Properties.getValue("lastStyle")
);
}
}
```
## Key issue?
If I start my project and make some property changes.
```
---------------------onSettingsChanged-------------------------- The initial state
Look style is:0
Look the last style is:0
---------------------onSettingsChanged-------------------------- Change the style in app settings through simulator
Look style is:1
Look the last style is:0
Look! lastStyle after set:1
---------------------onSettingsChanged--------------------------
Look style is:1
Look the last style is:0 In the last procedure, it should be 1 rather than 0. Just like a dirty read in a database
Look! lastStyle after set:1
```
Do you have any idea? Comments welcomed~
