alter table Report_ConstructionProblems
alter column ProblemDesrioption nvarchar(2000) null;

alter table Report_ConstructionProblems
alter column TreatmentMeasures nvarchar(2000) null;

alter table Report_RowMaterialProblem
alter column ProblemDesrioption nvarchar(2000) null;

alter table Report_RowMaterialProblem
alter column TreatmentMeasures nvarchar(2000) null;