Relation Table patterns

Hello,

I would like know if it's possible to change the pattern table with a relation.

For exemple. I make a pattern by table for an Extrusion_1 and i create 2 tables.

Pattern Table 1= Table_A

    id1  d0=20

    id2  d0=30

    id3  d0=40

Pattern Table 2= Table_B

    id1  d0=20

    id2  d0=30

    id3  d0=40

    id4  d0=50

    id5  d0=60

I search a relation of this type.

/* Pattern of Extruction_1 with Table 1

if AAA=="TRUE"

table_pattern:ID_EXTRUSION_1="table_A"

endif

/* Pattern of Extruction_1 with Table 2

if AAA=="FALSE"

table_pattern:ID_EXTRUSION_1="table_B"

endif

I don't know the exactly term of "table_pattern:ID_EXTRUSION_1". If there exist.

Thank for your help,

Damien,