About constraint dimension direction control

[rockymeng88JYY]

i create 4 ref plan and make 3 constraint dimensions between them, if i change the constraint dimensions value , the right side 4 stayed still , while  ref plan 1 2 3 will move left, but if  ref plan 1 locked, any change to constraint  B or C would cause an error . 

how to control the direction of constraint dimension?

[curtisridenour]

dimension from a strong reference to a weak reference. make sure reference plane one is pinned down. dimensions from that reference plane to the right.

[curtisridenour]

 

[ToanDN]

Make sure only ONE out of the four ref planes is pinned, and none of the parameters (A, B, C) are locked.

[rockymeng88JYY]

the attachment is the test file 

if the bottom ref plan is locked, and  global parameter C  can't be changed.

[RDAOU · Accepted solution]

@rockymeng88JYY 

Behavior of reference planes in the Project environment is not the same as in Family environment

I am not sure why you need such global parameters (we rarely use them for labeling Dimensions - and mostly to label parameters ) but you might want to consider a different approach ... such as 

Option A: A guide Family

1. building that relationship in a family
2. and then using the pick line tool, you can snap objects/families to the reference planes from the Guide Family 

Option B - Use Grids instead of Reference Planes (See GIF below - PS: You can create a new type without the bubble)

[rockymeng88JYY]

thanks a lot. plant b is what i want

i wanna create a house include many "rectangle" rooms  , the length and width of the rooms can be changed with global parameters . something like parametric house.

At first, i try to lock the wall to ref plan,  but some error  occur，as u can see the questions above .