Creating a block property (SysML)
1. In an appropriate pane, locate the Block for which you want to create a Block Property.
On the 
Blocks pane, all Blocks are listed in the Block folder.
Blocks pane, all Blocks are listed in the Block folder.2. Right click the Block, and select > > .
3. To use an existing item as a type:
a. In the Options group, click the Existing Type option.
b. Select the item that you want to use as a type, and then click OK.
Note that, in the Existing Type: pane, you can click the Find Items button to open the Add New Search Folder dialog where you can specify the Type and a subset or the full Name of the items that you want to find.
To create a new item to use as a type:
a. In the Options group, click the New Type option.
b. From the Type list, select the type of the item you want to create and use as a type.
c. In the Name box, type the name of the item that will be used as a type, and then click OK.
To create an untyped Block Property:
In the Options group, click the Untyped option, and then click OK.
4. Type the name of the Block Property, and then press the Enter key.
Alternatively:
On a Block Definition Diagram, you can create a Block Property of type Part by creating an Aggregation or Composition from a Block to the referenced Block. Create a Block Property of type Reference by creating an Association from a Block to the referenced Block.
On an Internal Block Diagram, you can create a Block Property through the Block Property button.
How?
After creating a Block Property, you can specify its multiplicity and set it up as shared, read only and as a measure of effectiveness. For more information, see the Related Topics.