#### ID Expression Combinations

Array ID Expressions , Wild Card ID Expressions, and external subroutine, basic script, and external part program ID Expressions can be used in combination. For example, to refer to the third instance of all features that start with the letters "CIR" in an external part program attached with the ID "BOLTPAT" use the ID expression "BOLTPAT:CIR*[3]".

Also, ID Expressions can be used in regular expressions. Thus, the measured centroid of the above set of features could be assigned to variable with the following expression:

> ASSIGN/V1 = BOLTPAT:CIR*[3].XYZ

Also, ID Expressions can be used in regular expressions. Thus, the measured centroid of the above set of features could be assigned to variable with the following expression:

> ASSIGN/V1 = BOLTPAT:CIR*[3].XYZ