Parallel installation - How to assign my prefered default version?

[ROSt53]

kubuntu 14.04 LTS
LibO 4.2 installed from kubuntu repository
LibO 4.3 installed with DEB file from LibO - installed additionally

When I double click an LibO file, LIbO 4.2 opens. I want LibO4.3 to start as my default version.

How can this be achieved?

[karolus]

Hallo

→Rightclick on LibO file→open with→other and choose the path /opt/libreoffice4.3/soffice

[ROSt53]

@karolus - Thanks for helping a bloody newbie like me!!! Highly appreciated!!! It works already.— The second “other” is the key. Remembered.