3277502 - Is it possible to change attribute Data type afterwards in Process Manager?

When our workspace was set up - we set up an Accountable Attribute with a Data type of Dictionary list - we would like for this attribute to include - As list 
Is there any way that we can do this - without deleting and recreating the attribute

It is not possible to edit the data type or the As list option after saving the attribute.
https://help.sap.com/docs/signavio-process-manager/workspace-admin-guide/custom-attributes?locale=en-US#add-a-custom-attribute-for-a-dictionary-category

KBA , BPI-SIG-PM-EXP , Explorer for SAP Signavio Process Manager , How To