Making new column based on whether value from another column in same table is in a different table

Hi,

I have two tables, A and B.

I want to make a new column in table A, such that if a value in another column in table A is in table B, then we set the value to 1, else we set it to 0.

Example:

TableA

TableB

Resulting table 

I have googled high and low and tried this:

New Column = IF(
CALCULATE(COUNTROWS(Table2), FILTER(Table2, Table2[Value]=Table1[Value])) > 0,
1,0)

But this sets everything to 1 in the new column.

Any help would be really appreciated.