[r134] Pick by variable with families

Link to .capx file (required!):

https://dl.dropboxusercontent.com/u/3954039/Temp/pickByVariable.capx

Steps to reproduce:

1. Run .capx

Observed result:

Using "pick by variable" on a family causes an error

Expected result:

"Pick by variable" to work on families

Browsers affected:

Chrome: yes

Firefox: yes

Internet Explorer: yes

Operating system & service pack: Windows 7 Ultimate

Construct 2 version: r134

Thanks, should be fixed in next build.