How do I rotate once?

Hello , long time to use construct and need your help.

2 buttons and 1 square.

Any way every time on press button "A" the square rotate 90 degrees left and when press button "B" to rotate 90 degrees it right?

Note: Need to show the rotation so with out use the rotate clockwise.

Thanks.

Use the tween behavior.

Use the tween behavior.

Thank you , this is complete what i need.