unoboud variable error when reading journal for dynamic mesh
 

I am trying to modify the coefficients in the Fluent linear solution matrix for
the continuity equation for cells attached to an FSI interface.
but fluent appears with an error when i trigger the journal file .

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the journal file is :

(rpsetvar ‘dynamesh/sc-bc-compressibility-type <2>)

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the error which is appear is :

> (rpsetvar ‘dynamesh/sc-bc-compressibility-type <2>)
Error: eval: unbound variable

Error Object: ‘dynamesh/sc-bc-compressibility-type

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I would really appriciate any help cuz im really confused.