Using Action result as input for another Action - not possible?

Hi,

I have an action that I call from presentation. Depending on our deployment stages it will return the domains that are possible to select.

Domain ->  GetAction("com.companyxyz.presentation","getDomainsForDeploymentStage").call(#deploymentStage)

Afterwards I want to pick a backup vlan depending on the domain

vlan -> GetAction("com.companyxyz.presentation","getBackupVlan").call(#deploymentStage, #Domain)

However the value "#Domain" is always null in the action script.

If I use GetAction("com.companyxyz.presentation","getBackupVlan").call(#deploymentStage, "domain.local")  it returns the expected value.

Is there a limitation that I can't use an action result as input for another action?

I am using vRO 7.0